KR20240044618A - Non-destructive testing device for small-diameter pipes - Google Patents

Abstract

A non-destructive testing device for small diameter pipes is provided. In one embodiment, a non-destructive testing device for pipes includes: a beam-shaped band having a long axis; A support installed on a support coupling portion formed in the center of the band and on which a sensor probe is mounted; A first fixing means fastened to a first band coupling portion provided at one end of the band; And a second fixing means fastened to the second band coupling portion provided at the other end of the band, wherein the support has a support fastening member groove formed at a position corresponding to the support fastening member through hole penetrating the support coupling portion. Provided, it may be possible to bind and release the band and the support using a support fixing fastening member.

Description

NON-DESTRUCTIVE TESTING DEVICE FOR SMALL-DIAMETER PIPES}

The present invention relates to a non-destructive testing device, and more specifically, to a non-destructive testing device for small-diameter pipes that inspects circumferential welds of small-diameter pipes.

In non-destructive testing, ultrasonic testing conventionally used had many limitations due to efficiency, inability to permanently preserve results, and thickness. For this reason, the basic method of inspection for small-diameter and thin-thick specimens has been relying on radiography. However, radiography has limitations in safety, work schedule, etc., and there were problems with detecting defects such as planar defects and fine linear defects. Therefore, to overcome these limitations, Phased Array Ultrasonic Testing (PAUT) was applied to non-destructive testing of thin, small-diameter pipe welds.

The inspection environment for detecting defects in small-diameter pipes is often unsuitable for humans as the space between pipes is very narrow, so the encoder method is adopted to quickly and accurately find defects in the circumferential pipe welds instead of humans. Therefore, a non-destructive testing device that can acquire and store data is used.

Existing non-destructive testing devices are manufactured by assembling multiple joints to fit the outer diameter of the pipe. However, existing non-destructive inspection devices require samples or templates of the outer diameter of the pipe to be inspected when assembling, are complicated before inspection, require a lot of assembly time, or have an ultrasonic inspection device for each size of pipe. There was a problem that the number of parts increased and the cost increased. Therefore, there is an urgent need for the development of a technology that can improve inspection reliability by allowing precise inspection of welds without having to have an ultrasonic inspection device for each pipe or making assembly and installation complicated.

In order to solve the above problem, the present invention includes a band corresponding to a small diameter pipe, a fixing means for fixing the band to the pipe, a moving means for moving the band to the inspection unit, and an ultrasonic inspection device. A non-destructive testing device for small-diameter pipes with a simple structure is provided, and non-destructive testing of the welded portion of the pipe is performed sequentially by moving the inspection part by a moving means, and can be stably fixed to the pipe in question by a fixing means, thereby improving inspection precision. The aim is to provide a non-destructive testing device for small diameter pipes that can improve.

The present invention relates to a non-destructive testing device for pipes, comprising: a beam-shaped band having a long axis; A support installed on a support coupling portion formed in the center of the band and on which a sensor probe is mounted; A first fixing means fastened to a first band coupling portion provided at one end of the band; And a second fixing means fastened to the second band coupling portion provided at the other end of the band, wherein the support has a support fastening member groove formed at a position corresponding to the support fastening member through hole penetrating the support coupling portion. A non-destructive testing device for a small diameter pipe is provided, capable of binding and disengaging the band and the support using a support fixing fastening member.

According to one embodiment of the present invention, bands for each pipe diameter can be used, making it possible to perform non-destructive testing on pipes of various sizes from 0.8" (20.3 mm) to 4.5" (114.3 mm).

In addition, the non-destructive testing device of the present invention can greatly increase the precision of inspection with just one inspection by performing inspection with two probes mounted, and the distance between probes can be precisely adjusted from 0 mm to 55 mm, allowing various Non-destructive testing can be performed precisely on pipes of any size.

In addition, the non-destructive inspection device of the present invention can greatly improve inspection precision by applying a high-resolution encoder (<0.001 inch).

In addition, the non-destructive testing device of the present invention uses a wheel made of urethane to prevent slipping during the inspection process, enabling precise control of movement for detailed inspection.

In addition, the non-destructive testing device of the present invention can maintain a firm contact state of the probe/wedge by applying a spring wheel to the surface.

In addition, the non-destructive testing device of the present invention has a fastening structure that allows for intuitive and robust coupling, and thus does not require complicated settings or templates, thereby improving convenience of use.

Figure 1 shows each member of an inspection device according to an embodiment of the present invention.
Figure 2 shows an inspection device in which each member is combined according to an embodiment of the present invention.
Figure 3 shows an inspection device fastened to a welded pipe according to an embodiment of the present invention.
Figure 4 shows a combined form of a pair of inspection devices according to an embodiment of the present invention.
Figure 5 also shows a movement pattern of probe ultrasonic waves in a welded area according to each embodiment of the present invention.
Figure 6 shows a cross-section of the support coupling portion of the band and the support band coupling portion fastened according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention are described in detail. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete and to convey the content of the present invention to those skilled in the art. It is provided for more complete information.

In this specification, when an element is referred to as being located 'above' or 'below' another element, this means that the element is located directly 'above' or 'below' another element, or that there is an additional element between those elements. It includes all meanings that can be included. In this specification, the terms 'upper' or 'lower' are relative concepts established from the observer's viewpoint. If the observer's viewpoint is different, 'upper' may mean 'lower', and 'lower' may mean 'upper'. It could mean.

In a plurality of drawings, like symbols refer to substantially the same elements. In addition, terms such as 'include' or 'have' are intended to specify the existence of the described feature, number, step, operation, component, part, or combination thereof, but are not intended to indicate the existence of one or more other features, numbers, or steps. , it should be understood that it does not exclude in advance the possibility of the existence or addition of operations, components, parts, or combinations thereof.

Meanwhile, the non-destructive testing device of the present invention is capable of non-destructive testing of pipes of various diameters, and provides excellent performance by solving the problems of conventional non-destructive testing devices in small-diameter pipe testing, such as boiler tube inspection, for example. It can be performed.

Hereinafter, it will be described in detail with reference to the drawings.

Figure 1 shows each member of an inspection device according to an embodiment of the present invention, and Figure 2 shows an inspection device to which each member is combined according to an embodiment of the present invention.

Referring to Figures 1 and 2, the inspection device 1 includes a band 100, a support 200, a first fixing means 300, and a second fixing means 400.

Referring to FIG. 1 (a), the band 100 may be in the form of a beam with a long axis. For example, it may be formed in a prism, cylinder, or composite shape, but is not limited thereto, and may be manufactured in various thicknesses and lengths. It may also be made of metal and plastic materials, but is not limited thereto.

The band 100 may have a first fixing means band coupling portion 324 and a second fixing means band coupling portion 424 coupled to both ends with respect to the long axis. For example, the first fixing means band coupling portion 324 of Figure 1 (c) is coupled to the band first coupling portion 130 constituting one end of the long axis of the band 100, and the band constituting the other end The second fixing means band coupling portion 424 of FIG. 1 (d) may be coupled to the second coupling portion 140. At this time, the first band coupling portion 130 may have a shape corresponding to the first fixing means band coupling portion 324, and the second band coupling portion 140 may have a shape corresponding to the second fixing means band coupling portion 424. . For example, the band first coupling portion 130 and the band second coupling portion 140 are dug into an L-shaped or convex structure in the thickness direction of the band 100 to form a step, and the band first coupling portion locking protrusion (132) and a second band coupling portion locking protrusion (142) may be formed. At this time, the band first coupling portion locking protrusion 132 and the band second coupling portion locking protrusion 142 may have a specific shape consisting of a curve, a straight line, or a combination of curves and straight lines, but are not limited thereto. The first fixing means band coupling portion 324 and the second fixing means band coupling portion 424 are formed in an L-shaped or concave structure to correspond to the first band coupling portion 130 and the second band coupling portion 140. The portion in contact with the upper first coupling portion locking protrusion 132 and the band second coupling portion locking protrusion 142 is formed in a corresponding shape, so that intuitive coupling is possible and can be firmly fixed.

In addition, in addition to the first coupling portion 130, the first fixing means band coupling portion 324, the second band coupling portion 140, and the second fixing means band coupling portion 424 are terminals through which electricity can conduct (not shown). can be formed and electrically connected.

The band first coupling portion 130 is formed with a band first fastening member groove 131 into which the first fixing means fastening member 323 of FIG. 1 (c) is fastened, and the band second coupling portion 140 is formed in FIG. A band second fastening member groove 141 into which the second fixing means fastening member 423 of 1 (d) is fastened may be formed. For example, the band first fastening member groove 131 has a shape corresponding to the first fixing means fastening member 323, and the band second fastening member groove 141 has a shape corresponding to the second fixing means fastening member 423. You can. For example, the first fastening member groove 131 and the band second fastening member groove 141 may have a screw groove or key groove shape, and the corresponding first fastening means fastening member 323 and The second fixing means fastening member 423 may be formed in the form of a screw or a key (KEY), but is not limited thereto. Accordingly, the first fixing means band coupling portion 324 and the second fixing means band coupling portion 424 can be simply and quickly fastened to the first band coupling portion 130 and the second band coupling portion 140. Non-destructive testing can be performed on pipe sizes ranging from 0.8" (20.3mm) to 4.5" (114.3mm) by easily replacing the band 100 for each pipe diameter.

The band 100 may have a support coupling portion 120 formed between the first band coupling portion 130 and the second band coupling portion 140. For example, the support coupling portion 120 may have a shape corresponding to the support band coupling portion 220 of FIG. 1 (b). For example, the support coupling portion 120 is located on the support band coupling portion 220 of Figure 1 (b), but corresponds to the probe mounting portion 250 having a smaller area and thickness than the support band coupling portion 220. A space is formed at the top, and a space corresponding to the support band coupling portion 220 is formed at the bottom, forming a structure that forms a continuous step in the form of a step. The detailed form will be described later with reference to FIG. 6. In addition, the support coupling portion 120 is formed with a coupling guide rail (not shown), a coupling guide groove (not shown), or a fastening structure (not shown) to enable intuitive coupling and to be firmly fixed. . In addition, the support coupling portion 120 is formed with a terminal (not shown) that can conduct electricity with the support band coupling portion 220, so that the band 100 and the support 200 of FIG. 1(b) can be electrically connected. .

The band 100 may be formed with a support fastening member through hole 110 penetrating at least a portion of the area forming the support coupling portion 120. For example, the support fastening member through hole 110 may be formed at a position corresponding to the support fastening member groove 221 of the support 200.

Band 100 may be formed in an arch shape. For example, the band 100 has a predetermined curvature from the support coupling portion 120 constituting the central portion to the band first coupling portion 130 and the band second coupling portion 140 constituting both ends of the band 100. It may have an arch shape that is curved and extended. Accordingly, when the inspection device 1 is mounted on a pipe, a band 100 suitable for the pipe curvature can be selected to prevent interference between each element of the inspection device 1 and the pipe.

Referring to FIG. 1 (b), the support 200 includes a support body 210 and a support band coupling portion 220. Additionally, a probe mounting portion 250 on which various sensor probes (not shown), for example, an ultrasonic inspection probe, may be formed at the support band coupling portion 220.

The probe may be a probe of various sensors used in non-destructive testing. For example, an ultrasonic probe, a phased array ultrasonic probe, an electromagnetic flaw detection probe, etc. may be applied, but it is not limited thereto. Additionally, the shape of the probe may be suitable for the inspection environment, such as a single array probe, a double array probe, a curved array probe, a wedge-shaped probe, or a square probe, but is not limited thereto.

The support body 210 may be formed with a main cable terminal 231 connected to the main cable 230, and an encoder cable terminal 240 connected to the encoder cable 331 of Figure 1 (c). there is. For example, the main cable terminal 231 and the encoder cable terminal 240 may be formed in a location where interference with the support band coupling portion 220 does not occur. For example, it may be formed on the side of the support body 210.

The support 200 can exchange power, electrical signals, and data from the main cable 230 through the main cable terminal 231. In addition, power, electrical signals, and data can be transmitted and received from the encoder cable 331 through the encoder cable terminal 240. For example, power, signals and data supplied from the main cable 230 may be transmitted to the encoder cable 331 through the encoder cable terminal 240 formed on the support body 210, and conversely, the encoder cable 331 Power, signals and data generated through can be transmitted through the main cable 230. In addition, power, signals and data supplied from the main cable 230 are transmitted to the probe mounting unit 250 through the support band coupling part 220, and probes of various sensors mounted on the probe mounting unit 250 (not shown) On the other hand, power, signals and data generated by the sensor probe (not shown) can be transmitted through the main cable 230. The support band coupling portion 220 of the support 200 and the support coupling portion 120 of the band 100 of FIG. 1 (a) may be coupled and fixed. For example, support fastening member grooves 221 may be formed in the support band coupling portion 220 on the left and right sides of the probe mounting portion 250. Accordingly, the support fastening member groove 221 and the support fastening member hole 110 formed at a corresponding position can be coupled to each other with a support fastening fastening member (not shown). For example, the support fastening member (not shown) may be formed in the form of a screw or key and be fixed after passing through the support fastening member hole 110 and the support fastening member groove 221. Accordingly, the band 100 and the support 200 can be simply and quickly fixed in place, and the band 100 can be easily replaced for each pipe diameter, from 0.8" (20.3mm) to 4.5" (114.3mm). Non-destructive testing can be performed on a variety of pipe sizes.

Referring to Figure 1 (c), the first fixing means 300 includes a first fixing means main body 310 and a first fixing means coupling portion 320.

The first fixing means coupling part 320 is coupled to the first fixing means coupling shaft 301 at one end of the first fixing means main body 310. For example, with respect to the first fixing means coupling axis 301, the first fixing means main body 310 and the first fixing means coupling part 320 may be folded at a certain angle like a hinge. In addition, the first fixing means coupling shaft 301 is fixed to the first fixing means main body 310, and the first fixing means coupling part 320 can be freely fastened to be folded at a certain angle with respect to the axis.

The first fixing means coupling part 320 may be formed with a first fixing means receiving part 321 through which the first fixing means coupling shaft 301 passes. A first fixing means operating member 322 may be mounted on the first fixing means receiving portion 321. The first fixing means operating member 322 is coupled to the first fixing means main body 310, the first fixing means coupling part 320, and the first fixing means coupling axis 301 to form the first fixing means coupling axis ( An external force may be applied so that the first fixing means main body 310 and the first fixing means coupling portion 320 can be folded at a certain angle based on 301). For example, the first fixing means main body 310 and the first fixing means coupling part 320 are connected to the first fixing means coupling axis by using the first fixing means operating member 322 formed of an elastic material such as spring or rubber. An external force can be applied to fold in one direction based on (301). In addition, the first fixing means main body 310 and the first fixing means coupling part 320 are connected to the first fixing means coupling shaft 301 using the first fixing means operating member 322 to which an electrically driven motor is applied. External force can be applied to fold and unfold based on .

The first fixing means main body 310 may have a first fixing means wheel 311 formed at the other end opposite to one end to which the first fixing means coupling portion 320 is coupled. The first fixing means wheel 311 is in contact with the pipe so that the first fixing means main body 310 and the pipe can be moved by the first fixing means wheel 311 without direct contact. For example, the first fixing means wheel 311 may be driven by a driving device or an external force. In addition, the first fixing means wheel 311 is made of urethane material to prevent slipping, but is not limited to this.

An encoder 330 may be included between the first fixing means coupling portion 320 and the first fixing means wheel 311. The encoder 330 may be electrically connected to the support body 210 through an encoder cable 331. The encoder 330 may further include an encoder wheel 332 in contact with the first fixing means wheel 311. The encoder wheel 332 in contact with the first fixing means wheel 311 can transmit driving force to the first fixing means wheel 311. In addition, the movement of the first fixing means wheel 311 can be measured and inspection data can be formed in conjunction with sensor measurement data values. In addition, the encoder 330 used in the present invention is a high-resolution encoder (<0.001 inch), which can greatly improve the precision of inspection.

Referring to Figure 1 (d), the second fixing means 400 includes a second fixing means main body 410 and a second fixing means coupling portion 420.

The second fixing means coupling part 420 is coupled to the second fixing means coupling shaft 401 at one end of the second fixing means main body 410. For example, the second fixing means main body 410 and the second fixing means coupling part 420 may perform a hinge movement at a predetermined angle based on the second fixing means coupling axis 401. Additionally, the second fixing means coupling shaft 401 may be fixed to the second fixing means main body 410, and the second fixing means coupling portion 420 may be fastened to be folded at a predetermined angle with respect to the axis.

The second fixing means coupling part 420 may be formed with a second fixing means receiving part 421 through which the second fixing means coupling shaft 401 passes. A second fixing means operating member 422 may be mounted on the second fixing means receiving portion 421. The second fixing means operating member 422 is coupled to the second fixing means main body 410, the second fixing means coupling part 420, and the second fixing means coupling axis 401 to form a second fixing means coupling axis ( An external force may be applied so that the second fixing means main body 410 and the second fixing means coupling portion 420 can be folded at a predetermined angle based on 401). For example, the second fixing means main body 410 and the second fixing means coupling part 420 are connected to the second fixing means coupling axis using the second fixing means operating member 422 formed of an elastic material such as spring or rubber. External force can be applied so that it can be folded in one direction based on (401). In addition, the second fixing means main body 410 and the second fixing means coupling part 420 are connected to the second fixing means coupling shaft 401 using the second fixing means operating member 422 to which an electrically driven motor is applied. External force can be applied so that it can be folded and unfolded as a standard.

The second fixing means main body 410 may have a second fixing means wheel 411 formed on a side end opposite to the side end where the second fixing means coupling portion 420 is coupled. The second fixing means wheel 411 is in contact with the pipe so that the second fixing means main body 410 and the pipe can be moved by the second fixing means wheel 411 without direct contact. For example, the second fixing means wheel 411 may be driven by a driving device or an external force. In addition, the second fixing means wheel 411 is made of urethane material to prevent slipping, but is not limited to this.

In this way, the present invention has the above-described fastening structure and operates by the first fixing means operating member 322 and the second fixing means operating member 422, and is ultra-small in size for a limited access area, with a pipe spacing of 12 mm (0.5 mm). inches), it can demonstrate excellent performance by overcoming the limitations of conventional non-destructive testing devices in small-diameter pipe inspection, such as boiler tube inspection.

Figure 2 shows the combination of the band 100, the support 200, the first fixing means 300, and the second fixing means 400 of the inspection device 1.

The main cable 230 is connected to the main cable terminal 231 of the support body 210 of the support 200, and the encoder cable 331 is connected to the encoder cable terminal 240.

The support coupling portion (120 in Figure 1) of the band 100 is coupled and fixed to the support band coupling portion 220 of the support band 200. At this time, the probe mounting portion 250 of the support band coupling portion 200 can be mounted without being interfered with by the band 100.

The first fixing means 300 is fixed to the band first coupling part (Figure 1 130) of the band 100 by the first fixing means fastening member 323, and is fixed to the band second coupling part (Figure 1 140). The second fixing means 400 is fixed by the second fixing means fastening member 423. For example, the first fixing means band coupling portion 324 and the second fixing means band coupling portion 424 are fastened to a shape corresponding to the first band coupling portion 130 and the second band coupling portion 140. , the portion in contact with the first coupling portion locking protrusion 132 and the band second coupling portion locking protrusion 142 may be formed in a corresponding shape and fixed. At this time, the first fixing means main body 310 and the second fixing means main body 410 are positioned inwardly in an arch shape based on the first fixing means coupling axis 301 and the second fixing means coupling axis 401, respectively. It can be folded.

As the band 100, the support 200, the first fixing means 300, and the second fixing means 400 are combined, a pipe receiving space 2 may be formed inside the arch shape.

A pipe of an appropriate size is seated in the pipe receiving space (2), and the first fixing means wheel 311 and the second fixing means wheel 411 come into contact with the pipe to fix the inspection device (1) to the pipe. An inward folding force acts on the main body 310 and the second fixing means main body 410, so that the sensor probe (not shown) mounted on the probe mounting unit 250 can be stably and closely attached to the pipe. Therefore, it is possible to simply and accurately inspect pipes in spaces where it is not appropriate for people to work.

Figure 3 shows an inspection device fastened to a welded pipe according to an embodiment of the present invention, and Figure 4 shows a combined form of a pair of inspection devices according to an embodiment of the present invention.

3 to 5, a pair of inspection devices 1a and 1b may be connected to each other.

Referring to FIG. 3, in a pair of inspection devices 1a and 1b, the probe mounting portion 250a of one inspection device 1a and the probe mounting portion 250b of the other inspection device 1b are connected to the pipe 3. ) can be installed on the pipe 3 in an arrangement facing each other across the welded portion 4 formed in the pipe 3.

Referring to FIG. 4, the position and distance of a pair of inspection devices 1a and 1b can be controlled by the inspection device connection member 500. For example, the distance between the probe mounting portion 250a and the probe mounting portion 250b can be adjusted according to the width of the welded portion within the range of 0 to 55 mm and fixed to maintain a constant distance during inspection.

Referring to FIG. 5, in the non-destructive testing device of the present invention, a pair of inspection devices (FIG. 4 1a, 1b) are connected to each other and an inspection is performed with two probes mounted around the welded portion 4 of the pipe 3. can do. For example, referring to FIG. 5 (b), it can be seen that when one probe 5a is used, an uninspected area 7 may be formed in the welded area 4 where the ultrasonic beam 6a does not reach. On the other hand, referring to FIG. 5 (c), it can be seen that when two probes 5a and 5b are used, the ultrasonic beams 6a and 6b reach all parts of the weld zone and the uninspected portion disappears. Accordingly, the precision and accuracy of the test can be greatly improved with just one test.

Figure 6 shows a cross-section of the support coupling portion of the band and the support band coupling portion fastened according to an embodiment of the present invention.

Referring to FIG. 6, the support band coupling portion 220 may be mounted on the support coupling portion (FIG. 1, 120) formed at the center with respect to the long axis of the band 100.

The support coupling portion (FIG. 1, 120) may include a central coupling portion 121, a first extending portion 122, a second extending portion 123, and a third extending portion 124. You can.

The coupling portion central portion 121 may be formed to extend horizontally to include an area where the probe mounting portion 250 and the inspection device connection member 500 disposed on both sides of the probe mounting portion 250 are disposed. At this time, the area in contact with the central portion of the coupling portion 121 and the top of the probe mounting portion 250 may be formed to correspond to each other. For example, the central part 121 of the coupling part coupled to the area where the upper part of the probe mounting part 250 extends in a curved shape includes an area formed in the same shape as the curved surface, and the upper part of the probe mounting part 250 extends in a flat surface. The central part of the coupling part 121, which is coupled to the area where the coupling part 121 is connected, includes an area formed of the same flat surface, thereby expanding the contact area between the central part of the coupling part 121 and the probe mounting part 250, so that it is intuitively and accurately coupled and firmly fixed. It can be.

Additionally, a probe mounting portion protrusion 251 may be formed in the probe mounting portion 250, and a coupling guide groove 125 may be formed in a corresponding position in the coupling portion central portion 121. Accordingly, the probe mounting portion 250 is guided to the central portion of the coupling portion 121 so that it can be intuitively and accurately coupled and firmly fixed by expanding the contact area.

The first extension portion 122 of the coupling portion is bent and extended from both ends of the central portion 121 of the coupling portion in the direction in which the support band coupling portion 220 is disposed. The central portion of the coupling portion 122 may extend to a position in contact with the upper end of the support band coupling portion 220.

The second extension part of the coupling part 123 is bent and extended from the first extension part of the coupling part 122 in the direction in which the support band coupling part 220 extends. At this time, the area where the second extension part of the coupling part 123 and the upper end of the support band coupling part 220 come into contact may be formed in a shape corresponding to each other. For example, if the upper part of the support band coupling part 220 is a curved surface, the second extension part 123 of the coupling part is also formed with the same curved surface, and if the upper part of the support band coupling part 220 is flat, the second extension part of the coupling part 123 is formed with the same curved surface. The extension portion 123 is also formed on the same plane and can be accurately coupled and firmly fixed by expanding the contact area between the second lower surface of the coupling portion 123 and the support band coupling portion 220.

The third extension part of the coupling part 124 may be bent and extended from the second extension part of the coupling part 123 and formed to surround the support band coupling part 220. For example, the third extension part of the coupling part 124 may be formed to extend beyond the thickness of the support band coupling part 220.

In this way, the support coupling part (FIG. 1, 120) of the present invention is formed in the above-described form, so that it can be intuitively and accurately coupled to the support band coupling part 220, and can be firmly fixed by expanding the contact area.

As described above, the specific description of the present invention has been made based on examples with reference to the accompanying drawings, but since the above-described embodiments are only explained by referring to preferred examples of the present invention, the present invention is limited to the above embodiments. It should not be understood, and the scope of rights of the present invention should be understood in terms of the claims and equivalent concepts described later.

For example, to aid understanding, drawings schematically show each component as the main component, and the thickness, length, number, etc. of each component shown may differ from the actual drawing during the drawing process. In addition, the materials, shapes, dimensions, etc. of each component shown in the above embodiments are only examples and are not particularly limited, and various changes are possible without substantially departing from the effect of the present invention.

1: Inspection device
2: Pipe accommodation space
3: pipe
4: welding part
5a, 5b: probe
6a, 6b: Ultrasound beam
7: Unexamined part
100: band
110: Through hole of support fastening member
120: support joint
121: central part of the joint
122: first extension part of coupling part
123: second extension part of coupling part
124: Third extension of coupling part
125: Combination guide groove
130: Band first coupling portion
131: Band first fastening member groove
132: Band first coupling portion locking jaw
140: Band second coupling portion
141: Band second fastening member groove
142: Band second coupling portion locking jaw
200: support
210: support body
220: Support band coupling part
221: Support fastening member groove
230: main cable
231: main cable terminal
240: Encoder cable terminal
250: Probe mounting part
251: Probe mounting portion protrusion
300: First fixing means
301: First fixing means coupling axis
310: first fixing means main body
311: first fixing means wheel
320: First fixing means coupling part
321: First fixing means receiving portion
322: First fixing means operating member
323: First fixing means fastening member
324: First fixing means band coupling part
330: encoder
331: Encoder cable
332: encoder wheel
400: Second fixing means
401: Second fixing means coupling axis
410: Second fixing means main body
411: Second fixing means wheel
420: Second fixing means coupling part
421: Second fixing means receiving portion
422: Second fixing means operation member
423: Second fixing means fastening member
424: Second fixing means band coupling part
500: Inspection device connection member

Claims (6)

In the non-destructive testing device for pipes,
A beam-shaped band with a long axis;
A support installed on a support coupling portion formed in the center of the band and on which a sensor probe is mounted;
A first fixing means fastened to a first band coupling portion provided at one end of the band; and
a second fixing means fastened to a second band coupling portion provided at the other end of the band;
Including,
The support is provided with a support fastening member groove formed at a position corresponding to the support fastening member through hole penetrating the support coupling part, and is non-destructive for a small diameter pipe, enabling fastening and disengagement of the band and the support by the support fastening fastening member. Inspection device. In claim 1,
A pair of the non-destructive testing devices are installed on the small-diameter pipe, and the probe mounting portions on which the probes are mounted are installed in an arrangement facing each other, so that the inspection is performed with the two probes mounted, so that only one inspection is possible. A non-destructive testing device for small-diameter pipes that can greatly increase the precision of inspection. In claim 2,
The pair of non-destructive testing devices are coupled to each other by a testing device connection member so that the distance between the probe installed in one non-destructive testing device and the probe installed in the other non-destructive testing device is controlled from 0 mm to 55 mm. and a distance-controlled, non-destructive testing device for small diameter pipes. The method of any one of claims 1 to 3,
The first fixing means is,
First fixing means main body;
A first fixing means coupling part connected to the first fixing means main body and the first fixing means coupling axis; and
a first fixing means accommodating part formed in the first fixing means coupling part, through which the axis of the first fixing means coupling part passes and accommodating the first fixing means operating member;
Including,
The first fixing means operating member is a non-destructive testing device for a small-diameter pipe, wherein the first fixing means coupling part from the first fixing means main body performs a hinge movement based on the axis of the first fixing means coupling part. In claim 4,
The second fixing means is,
Second fixing means main body;
a second fixing means coupling portion connected to the second fixing means main body and the second fixing means coupling shaft; and
a second fixing means accommodating part formed in the second fixing means coupling part, through which the axis of the second fixing means coupling part passes and accommodating the second fixing means operating member;
Including,
The second fixing means operating member causes the second fixing means coupling portion from the second fixing means main body to perform a hinge movement based on the second fixing means coupling axis,
A non-destructive testing device for a small-diameter pipe, wherein the first fixing means coupling portion and the second fixing means coupling portion move in a direction to approach each other and have a structure surrounding the outer surface of the small-diameter pipe.
The method of any one of claims 1 to 3,
The band and the support are fixed with a support fixing fastening member;
The band first coupling portion and the first fixing means are fixed with a first fixing means fastening member; and
The band second coupling portion and the second fixing means are fixed with a second fixing means fastening member;
Fastening structure of a non-destructive testing device for small diameter pipes, including.