KR20240096140A - Non-destructive inspection device for water supply pipe capable of lining process - Google Patents

Abstract

The present invention relates to a non-destructive inspection device for water pipes, comprising a traveling body movably mounted on the surface of the pipe, a pivot unit installed on the front of the traveling body to pivot, and a guide rail installed on the pivot unit; A tilting unit consisting of a moving block installed on the guide rail and moving linearly in the longitudinal direction of the guide rail and a rotating block pivoting by being axially coupled to the moving block, and installed on the front of the rotating block of the tilting unit and the length of the rotating block A support unit that moves linearly in one direction, a holder unit installed on the support unit and equipped with a probe whose height is adjusted so that the probe is in close contact with a welded portion of the pipe, and a pipe installed on the traveling body and in which a defect is detected by the probe. A non-destructive inspection device for water pipes capable of lining processing is disclosed, which includes a marking unit that etches the surface by irradiating a laser beam to the surface.

Description

Non-destructive inspection device for water supply pipe capable of lining process}

The present invention relates to a non-destructive inspection device for water pipes. More specifically, the present invention relates to a non-destructive inspection device for water pipes. More specifically, when inspecting the inside of a pipe using ultrasonic flaw detection equipment after lining processing is performed to rehabilitate an old pipe, the area where lining defects occur is etched to prevent defects. It relates to a non-destructive inspection device for water pipes that can accurately determine the location of the defect and perform lining processing at the location where the defect occurred.

In general, large-diameter water pipes and small-diameter water supply pipes that supply tap water, oil pipes and gas pipes that transport various fluids such as oil, sewer pipes that transport sewage (hereinafter collectively referred to as 'pipes'), etc. If silver is used for a long time after installation, various foreign substances contained in the fluid are deposited on the inner wall of the pipe as it ages, or the inner surface of the pipe is oxidized, forming rust, etc., and these solidify to form a scale layer.

As described above, the scale layer created on the inner surface of the fluid pipe gradually thickens and solidifies over time, which causes a problem in that it interferes with the smooth flow of fluid and reduces fluid pressure.

In addition, the scale layer attached to the pipe dissolves in the fluid, causing contamination of the fluid. It not only causes significant disruption in maintaining the function of the pipe network, but also has the serious result of increasing energy consumption, so the pipe must be cleaned periodically. You have to clean it.

Therefore, in order to solve problems such as corrosion products inside the pipe and damage to the pipe, improvement work (replacement or rehabilitation) is performed on the old pipe. Typical old pipe rehabilitation methods applied to pipe improvement construction include customs (cleaning) and lining.

This method of rehabilitating old pipes will be described with reference to Figure 1.

Figure 1 is a flow chart showing a general old pipe rehabilitation process. Explaining with reference to the drawing, the first process (S1) is to inspect the inside of the pipe, and the old pipe is divided into one section of about 60 to 80 m in length, cut and opened after water is cut off, and a scraper, wire brush, and high-pressure water spray cleaner are used. ), etc., are pulled repeatedly several times with a power winch to remove scale attached to the pipe and discharged out of the pipe. The second process (S2) is to remove the water accumulated inside the pipe and then pull it with a blower. A third process (S3) of drying the inside of the pipe by transporting air, and when the surface of the inside of the pipe is dried, a hose equipped with a spray head is inserted into the pipe body, and then the spray head is moved to the outside of the pipe body while applying epoxy resin paint or polyurea The fourth process (S4), which performs lining by spraying, and when the epoxy paint or polyurea is completely cured, the inside of the pipe is cleaned, the pipe cut part is connected, water is passed through, and the rehabilitation work is completed by filling in the soil according to regulations. It consists of 5 processes (S5).

After the above-mentioned rehabilitation method, ultrasonic flaw detection equipment is used to inspect the peeling, thickness, and pores of the paint lining the inside of the pipe, and based on this, lining processing is performed again for the problem area.

However, after inspecting the inside of the pipe using ultrasonic flaw detection equipment as described above, in order to redo the lining processing for the part where the problem occurred, the inspector must measure the location of the part where the lining processing problem occurred from the end of the pipeline to the defective part. The distance is recorded by hand on a recording sheet or marked on the lining surface with a marking pen.

However, when the inspector manually records the defective part on the recording paper as described above, there is a problem in that it is difficult to accurately determine the location of the defective part.

In addition, when the inspector marks the defective part with a marking pan, there is a problem that the marking on the marking pan is erased by high-pressure water when relining the defective part, making it impossible to accurately determine the defective location.

KR A 10-2004-0021496 (2004.03.10)

The present invention is intended to solve the above problems. After lining processing is performed to rehabilitate an old pipe, when inspecting the inside of the pipe using ultrasonic flaw detection equipment, the area where lining defects occur is etched to determine the location of the defect. The purpose is to provide a non-destructive inspection device for water pipes that can accurately identify and perform lining processing at the location where the defect occurs.

The technical idea of the present invention for achieving the above object includes a traveling body that is movably seated on the surface of the pipe, a pivot unit installed on the front of the traveling body to pivot, and a pivot unit installed in the pivot unit. A tilting unit consisting of a guide rail, a moving block installed on the guide rail and moving linearly in the longitudinal direction of the guide rail, and a rotating block pivoting by being axially coupled to the moving block, and installed on the front of the rotating block of the tilting unit, A support unit that moves linearly in the longitudinal direction of the rotating block, a holder unit installed on the support unit and equipped with a probe whose height is adjusted so that the probe is in close contact with the welded part of the pipe, and a holder unit installed on the traveling body and detecting defects by the probe. This is achieved by a non-destructive inspection device for water pipes, which includes a marking unit that irradiates a laser beam to the surface of the detected pipe to etch the surface.

Here, the marking unit preferably includes a laser irradiator installed inside the traveling body to irradiate a laser beam onto the surface of the pipe to etch it.

In addition, it is preferable to include a cleaner installed in front of the laser irradiator to remove moisture by wiping the surface of the pipe before the laser beam etches the surface of the pipe.

In addition, it is preferable to include a collection unit installed behind the laser irradiator to suck and collect fume generated when the surface of the pipe is etched by the laser beam.

In addition, the pivot unit includes a base plate fixed to the front of the traveling body, a protruding plate provided on both sides of the base plate and protruding toward the front of the traveling body and having a clutch formed on an inner side, and a clutch of the protruding plate. A clutch block is connected to a concentric axis and pivots, and as it moves in the axial direction of the concentric axis, it contacts the clutch and the pivot angle is interrupted, and a rail groove provided in the clutch block and formed in the guide rail is pressed to move the guide rail. It is desirable to include a rail fixing part that regulates.

In addition, the rail fixing part includes a fixing piece formed on the front of the clutch block and located in the rail groove of the guide rail, a guide groove formed on the clutch block adjacent to the fixing piece, and located in the guide groove. It is preferable to include a movable piece that moves closer to or away from the fixed piece and a rail fixing fastener that penetrates the clutch block and is screwed to the movable piece located in the guide groove and moves the movable piece by a rotation operation.

In addition, the pivot unit has a tip exposed to the outside of the protruding plate and a proximal end penetrating the protruding plate and being pivotally fastened to a movable pin connected to the clutch block and a distal end of the movable pin to pivot, thereby causing the clutch block to pivot. It is preferable to include a fixing lever that comes into close contact with the clutch formed on the inner surface of the protruding plate.

In addition, the tilting unit further includes a torsion spring that rotates the rotation block within the moving block to exert an elastic force to point the support unit in a direction opposite to the surface of the pipe, and the rotation block includes the torsion spring. It is desirable to include a stopper that regulates the elastic force provided by.

In addition, the support unit forms an assembly block with a cutout that presses upward and downward on a protruding rail formed on the front of the rotation block of the tilting unit, and a rotating body that is pivotally fastened to the other end of the assembly block opposite the cutout, and the rotation body is formed. It is preferable to include an arm extending on both sides around the body and a fastener provided at an end of the arm to secure the holder unit.

In addition, the holder unit includes a receptor with an open lower part and a space inside to accommodate the probe, an elevating member that moves up and down inside the container and is equipped with the transducer, and a state screwed to the upper surface of the elevating member. It is preferable to include a control knob that penetrates the upper surface of the receptor and is exposed to the outside, and a contact portion provided in the lower part of the receptor and in contact with the surface of the pipe.

In addition, the holder unit includes a receptor with an open lower part and a space formed therein to accommodate the probe, an elevating member that moves up and down inside the receptor and is provided with the probe, and an elastic restoring force interposed between the elevating member and the receptor. It is preferable to include an elastic member that exerts this force and a contact portion provided at the lower part of the container and in contact with the surface of the pipe.

In addition, the holder unit includes a receptor with an open bottom and a space inside to accommodate the probe, an elevating member that moves up and down inside the receptor and is equipped with the probe, and a load installed between the elevating member and the receptor. An actuator that expands and contracts from the cylinder, a contact part provided in the lower part of the receptor and in contact with the surface of the pipe, and a sensor provided in the contact part to measure the distance between the surface of the pipe and the bottom of the contact part and control the operation of the actuator. It is desirable to include it.

In addition, it is preferable that the lifting body has a locking protrusion formed therein on which the probe is caught, so that the lifting body and the probe are formed integrally.

In addition, the contact part is preferably provided with a roller on a surface facing the surface of the pipe, so that the roller rolls along the surface of the pipe.

In addition, the contact part is preferably provided with an air port that blows pressurized air toward the surface of the pipe or sucks foreign substances from the surface of the pipe.

In addition, the contact unit preferably includes a brush that rotates while in contact with the surface of the pipe and a detection unit that detects foreign substances on the surface of the pipe and controls the operation of the brush.

According to the non-destructive inspection device for water pipes according to the present invention, when the inside of the pipe is inspected using ultrasonic flaw detection equipment after lining processing has been performed to rehabilitate an old pipe, the area where lining defects occur is etched to accurately pinpoint the location of the defect. From this, lining processing can be performed at the location where the defect occurred.

In addition, the present invention provides a pivot unit, a tilting unit, and a support unit between the traveling body and the holder unit, so that the position of the holder unit can be adjusted in various ways according to the diameter of the pipe, so that it is not limited by the size of the pipe and can be adjusted to the welded part of the pipe. Precise inspection can be performed.

In addition, the present invention can easily adjust the distance between the surface of the pipe and the probe, allowing inspection with excellent reliability by attaching the probe to the welded part of the pipe.

Figure 1 is a flow chart showing a general old pipe rehabilitation process.
Figure 1 is a perspective view showing a non-destructive ultrasonic inspection device for pipe welds according to the prior art.
Figures 2 to 4 are perspective views of the non-destructive testing device for water pipes according to the present invention as seen from different directions.
Figure 5 is a side view showing a non-destructive inspection device for water pipes according to the present invention.
Figures 6 to 8 are diagrams showing a pivot unit among the non-destructive inspection devices for water pipes according to the present invention.
Figures 9 and 10 are diagrams showing a tilting unit among the non-destructive inspection devices for water pipes according to the present invention.
Figures 11 and 12 are cross-sectional views showing the operation of the holder unit in the non-destructive inspection device for water pipes according to the present invention.
Figures 13 to 16 are cross-sectional views showing other embodiments of the holder unit among the non-destructive inspection devices for water pipes according to the present invention.

This invention is a research result of a project supported by the National Water Industry Cluster's "Mini-cluster type project for water technology commercialization".

Terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor may appropriately define the concept of terms to explain his or her invention in the best way. It must be interpreted as meaning and concept consistent with the technical idea of the present invention based on principles.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figures 2 to 4 are perspective views of the non-destructive testing device for water pipes according to the present invention as seen from different directions, and Figure 5 is a side view showing the non-destructive testing device for water pipes according to the present invention.

When described with reference to the drawings, the non-destructive inspection device for water pipes according to the present invention includes a traveling body 100 movably seated on the surface of the pipe and a pivot unit 200 installed on the front of the traveling body 100 to pivot. ) and a guide rail 300 installed on the pivot unit 200, a tilting unit 400 that moves linearly and pivots in the longitudinal direction of the guide rail 300, and a support unit installed on the tilting unit 400 ( 500) and the holder unit 600, which is installed on the support unit 500 and is equipped with a probe 700, and is installed on the traveling body 100 and applies a laser to the surface of the pipe in which defects are detected by the probe 700. It consists of a marking unit 800 that irradiates and etches the surface.

To elaborate, the traveling body 100 is movably seated on the surface of the pipe, and traveling wheels 110 are provided at the lower portion of the traveling body 100 so that the traveling body 100 can move on the surface of the pipe. At this time, the traveling wheel 110 may be connected to the drive motor through a shaft and driven by rotational force provided from the drive motor.

In addition, the traveling body 100 has a marking unit 800 installed therein and radiates a laser beam to the surface of the pipe where defects are detected by the probe 700 to mark the surface of the pipe, that is, the surface lined with epoxy paint. (P) is etched to mark the part where the defect was detected.

This marking unit 800 may include a laser irradiator 810 that is installed inside the traveling body 100 and irradiates a laser beam (R) to the surface of the pipe to etch it. The laser irradiator 810 is, for example, For example, it may include a plurality of beam combiners installed inside the traveling body 100 and irradiating the laser beams R, respectively irradiated from the laser irradiator 810, to the surface of the pipe while combining them into one.

In this way, the laser beam combined in the beam combiner etches around the lined surface (P) of the pipe where the defect is detected to form a fine groove. Additionally, the laser irradiator 810 may be installed inside the traveling body 100 in conjunction with a stepping motor to adjust the irradiation angle of the laser beam R.

In this way, when the laser irradiator 810 is connected to the stepping motor, the irradiation direction of the laser beam can be adjusted by driving the stepping motor, and from this, the etching form on the lined surface (P) of the pipe can be varied.

In addition, the marking unit 800 uses a cleaner 820 to remove moisture by wiping the lined surface of the pipe before the laser beam is irradiated from the laser irradiator 810 to the lined surface of the pipe and the surface is etched. More may be included.

The cleaner 820 is installed at the lower part of the traveling body 100 and includes a roller 821 that rolls along the lined surface of the pipe and surrounds the roller 821 to remove moisture present on the ridden surface of the pipe. It may be composed of a wiping absorbent 822 and a buffer member 823 that supports the roller 821 and exerts an elastic force like a shock absorber to bring the roller 821 into close contact with the lined surface of the pipe.

In this way, when the cleaner 820 is installed at the lower part of the traveling body 100, the lined surface of the pipe, that is, the surface of the epoxy paint, is covered with an absorbent material before the laser beam is irradiated to the lined surface of the pipe by the laser irradiator 810. By wiping (822) to remove moisture and foreign substances, etching of the lining surface (P) by the laser irradiator (810) can be made easier.

Additionally, the marking unit 800 may further include a collection unit 830 that absorbs and collects fume generated when the ridden surface of the pipe is etched by the laser irradiator 810.

The collection unit 830 is installed inside the traveling body 100 to be located at the rear of the laser irradiator 810, and includes a vacuum pump that generates negative pressure and the negative pressure generated by the operation of the vacuum pump being etched by the laser beam. It consists of a nozzle that guides to the lining surface and absorbs and collects the fume generated when the lined surface (P) of the pipe is etched by a laser beam.

Meanwhile, a pivot unit 200 is installed on the front of the traveling body 100, and the pivot unit 200 consists of a base plate 210, a protruding plate 220, a clutch block 230, and a rail fixing part 260. It is composed. This will be explained based on FIGS. 6 to 8.

Figures 6 to 8 are diagrams showing a pivot unit among the non-destructive inspection devices for water pipes according to the present invention. When described with reference to the drawings, the pivot unit 200 has a base plate 210 fixed to the front of the traveling body 100, and protruding plates 220 are installed on both sides of the base plate 210.

At this time, the protruding plate 220 protrudes forward of the traveling body 100 and a clutch 221 is formed on the inner surface. The clutch 221 has a shape in which a plurality of teeth are formed on a disk.

In this way, the clutch block 230 is installed on the protruding plate 220 that is installed on both sides of the base plate 210 and protrudes toward the front of the traveling body 100. The clutch block 230 is concentrically connected to the clutch 221 formed on the protruding plate 220 and is installed to pivot within a pair of protruding plates, and faces the clutch 221 formed on the protruding plate 220. Thus, the liner 231 is formed. At this time, the liner 231 has a plurality of teeth that engage with the clutch 221 formed on the protruding plate 220.

In addition, as shown in FIG. 8, when the clutch block 230 pivots from the concentric axis, the clutch block 230 moves in the axial direction of the concentric axis so that the liner 231 of the clutch block 230 protrudes from the plate ( The pivot angle of the clutch block 230 is controlled by engaging the clutch 221 of 220).

In this way, the pivot unit 200 is provided with a movable pin 240 and a fixed lever 250 to move the liner 231 of the clutch block 230 to the clutch 221 of the protruding plate 220. The movable pin 240 has its tip exposed to the outside of the protruding plate 220, and its proximal end penetrates the protruding plate 220 and is fixed to the clutch block 230.

In addition, the fixed lever 250 is pivotally fastened to the tip of the movable pin 240, so that the clutch block 230 is positioned within the protruding plate 220 as the fixed lever 250 pivots at the tip of the movable pin 240. It is brought into close contact with the clutch 221 formed on the side.

As shown in FIG. 8, the fixing lever 250 forms different radii of curvature at the part where the fixing lever 250 contacts the outer surface of the protruding plate 220, so that the fixing lever 250 is connected to the movable pin 240. As the movable pin 240 moves to the outside of the protruding plate 220 as it pivots at the tip, the liner 231 of the clutch block 230 moves to the clutch of the protruding plate 220 to engage or, on the contrary, separates it. The pivot angle of the clutch block 230 is controlled.

In addition, the clutch block 230 is provided with a rail fixing part 260 to pressurize the rail groove 310 formed in the guide rail 300 to control the movement of the guide rail 300.

As shown in FIG. 7, this rail fixing part 260 is formed on the front of the clutch block 230 and includes a fixing piece 261 located in the rail groove 310 of the guide rail 300 and the fixing piece ( A guide groove 262 formed in the clutch block 230 adjacent to 261 and a moving piece 236 and clutch block 230 located in the guide groove 262 that move closer to or away from the fixed piece 261. ) It is composed of a rail fixing fastener 264 that is screwed to the movable piece 236 located in the guide groove 262 and moves the movable piece 236 by rotation.

According to the configuration of the rail fixing part 260, the moving piece 236 is connected to the clutch block 230 by rotating and tightening the rail fixing fastener 264 to fix the guide rail 300 to the clutch block 230. It moves from the guide groove 262 toward the rail fixing fastener 264, and as the movable piece 236 and the fixed piece 261 move away from each other, the movable piece 236 and the fixed piece 261 move toward the guide rail. The guide rail 300 is fixed to the clutch block 230 by pressing the rail groove 310 of 300.

Meanwhile, the tilting unit 400 is installed on the guide rail 300 and includes a moving block 410 that moves linearly in the longitudinal direction of the guide rail 300, and a rotating block 420 that is axially coupled to the moving block 410 and pivots. ) is composed of. This will be explained based on FIGS. 9 and 10.

Figures 9 and 10 are diagrams showing a tilting unit among the non-destructive inspection devices for water pipes according to the present invention. When explained with reference to the drawings, the moving block 410 of the tilting unit 400 is installed on the front of the guide rail 300 opposite the pivot unit 200 and moves in a straight line in the longitudinal direction of the guide rail 300. .

At this time, the movable block 410 has a protrusion 430 formed on the surface facing the guide rail 300 and is inserted into the rail groove 310, and a movable block (not shown) adjacent to the protrusion 430 is a movable block ( 410) is screwed to the movable block fixing fastener 440, and by rotating the movable block fixing fastener 440, the protrusion 430 and the movable block move away from each other, causing the protrusion 430 and the movable block to form a rail groove. By pressing 310, the moving block 410 is fixed to the guide rail 300.

In addition, the rotating block 420 is axially coupled to the moving block 410 and pivots. At this time, a torsion spring 450 is interposed between the rotating block 420 and the moving block 410 to maintain the rotating block 420 in the pipe. It provides an elastic force pointing in the direction opposite to the surface.

In addition, the rotation block 420 is provided with a stopper 460 that regulates the elastic force provided by the torsion spring 450. The stopper 460 has a tip exposed to the outside of the rotation block 420 and a base end connected to a moving block ( It consists of a locking structure that is caught on a shaft connecting the rotation block 420 and the stopper 460, and is pivotally fastened to the rotation block 420 between the tip and the base end of the stopper 460.

In addition, as shown in FIGS. 3 and 5, the tip of the stopper 460 is provided with a coil spring 470 supported by the moving block 410 at its lower portion so that no particular force acts on the tip of the stopper 460. The base end of one stopper 460 is caught on the axis connecting the moving block 410 and the rotating block 420.

When the tip of the stopper 460 is pressed by the structure of the tilting unit 400, the base end of the stopper 460 is unlocked and the rotating block 420 is moved to the surface of the pipe by the elastic force exerted by the torsion spring 450. By pivoting in the opposite direction, the support unit 500 and holder unit 600 provided on the front of the rotating block 420 are moved away from the surface of the pipe, so that the probe 700 contacts the surface of the pipe in the preparation state for inspection. By doing so, the probe 700 is prevented from being worn and damaged.

Meanwhile, a support unit 500 that moves linearly in the longitudinal direction of the rotation block 420 is provided on the front of the rotation block 420 of the tilting unit 400. As shown in FIGS. 2 to 4, the support unit 500 is an assembly block formed with a cutout 511 that presses upward and downward on the protruding rail 421 formed on the front of the rotation block 420 of the tilting unit 400. An arm 520 forming a rotating body 521 that is pivotally fastened to the other end of the assembly block 510 opposite the 510 and the cutout 511 and extending on both sides around the rotating body 521, and It is provided at the end of the arm 520 and consists of a fastener 530 that secures the holder unit 600.

In this way, the assembly block 510 installed on the protruding rail 421 formed on the front of the rotation block 420 is fixed to the rotation block 420 by reducing the gap between the incisions 511. . For this purpose, the assembly block 510 is provided with a fixing piece 540 having a thread penetrating the cut part 511, and by rotating the fixing piece 540, the cut part 511 protrudes from the rotating block 420. The assembly block 510 is fixed to the rotating block 420 by pressing the rail 421.

Meanwhile, the support unit 500 is equipped with a holder unit 600 equipped with a probe 700 to inspect the welded portion of the pipe. This will be explained based on FIGS. 11 and 12.

Figures 11 and 12 are cross-sectional views showing the operation of the holder unit in the non-destructive inspection device for water pipes according to the present invention. When explained with reference to the drawings, the height of the holder unit 600 is adjusted so that the probe 700 is in close contact with the welded part of the pipe, and the holder unit 600 is attached to the arm 520 of the support unit 500 with a fastener ( 530).

This holder unit 600 is composed of a receptor 610, an elevating body 620, a control knob 630 that controls the elevation of the elevating body 620, and a contact portion 640. The receptor 610 has a lower part. It is made in the form of an open hollow tube.

In addition, the elevating body 620 has a probe 700 therein, and is raised and lowered while located inside the receptor to adjust the height of the probe 700. At this time, the lifting body 620 has a locking protrusion 621 on which the probe 700 is caught, so that when the lifting body 620 is raised and lowered inside the receptor 610, the lifting body 620 and the probe (700) moves integrally.

And, as described above, the elevating body 620 provided as an elevating passage inside the receptor 610 controls the movement of the elevating body 620 by the control knob 630. The control knob 630 controls the movement of the elevating body 620 ( The upper part of the control knob 630 is exposed to the outside of the receptor 610 by penetrating the upper surface of the receptor 610 while screwed to the upper surface of the 620).

This control knob 630 is rotated by the user as shown in FIG. 12, so that the upper surface of the elevating body 620 is guided to the screw thread of the control knob 630 and is raised and lowered, and is located inside the receptor 610. The located elevating body 620 has an outer surface that forms a rotation prevention cross-section, so that when the control knob 630 is rotated, the elevating body 620 does not rotate inside the receptor 610, but rather moves on the inner surface of the receptor 610. It goes up and down accordingly.

In addition, the lower part of the receptor 610 is provided with a contact part 640, which contacts the surface of the pipe and guides the probe 700 to stably move along the surface of the pipe.

As shown in FIGS. 11 and 12, the contact portion 640 is provided with a port for supplying a medium such as water that serves as a medium when the probe 700 inspects the welded portion of the pipe.

The non-destructive inspection device for water pipes according to the present invention having the above configuration is provided with a pivot unit 200, a tilting unit 400, and a support unit 500 between the traveling body 100 and the holder unit 600 to Since the position of the holder unit 600 can be adjusted in various ways depending on the diameter, precise inspection of the welded portion of the pipe can be performed without being limited by the size of the pipe.

In addition, the present invention can easily adjust the distance between the surface of the pipe and the probe 700, so that a highly reliable inspection can be performed by attaching the probe to the welded part of the pipe.

Meanwhile, the present invention is not limited to the embodiments described above, but can be implemented with modifications and variations without departing from the gist of the present invention, and such modifications and modifications should be considered to fall within the technical spirit of the present invention. .

For example, in the present invention, the height of the probe 700 provided in the holder unit 600 is actively adjusted to conveniently inspect the welded part of the pipe or to remove foreign substances on the surface of the pipe before the probe 700 inspects it. As a result, highly reliable test results can be obtained. This will be explained based on FIGS. 13 to 16.

Figure 13 shows that an elastic member 650 is provided between the receptor 610 and the elevating body 620, and an elastic member 650 that exerts an elastic restoring force is interposed between the elevating body 620 and the receptor 610. .

In this way, when the elastic member 650 is interposed between the receptor 610 and the lifting body 620, the probe 700 moves in close contact with the surface of the pipe, and the probe 700 moves according to the surface irregularities of the pipe. By compressing the elastic member, the displacement of the probe 700 is actively controlled, thereby preventing the end of the probe 700, which is in close contact with the surface of the pipe, from being worn or damaged.

14 shows that an actuator 660 is provided between the receptor 610 and the lifting body 620, and a sensor 670 is provided at the contact portion 640 to measure the distance between the surface of the pipe and the bottom of the contact portion 640. This means that the actuator 660 is installed between the elevating body 620 and the receptor 610 and has a structure in which the rod expands and contracts from the cylinder.

In addition, the sensor 670 provided on the contact part 640 measures the distance between the surface of the pipe and the bottom of the contact part 640 and controls the operation of the actuator 660.

At this time, the sensor 670 that measures the distance between the surface of the pipe and the bottom of the contact part may be a laser sensor, a vision sensor, etc., and if irregularities are formed on the surface of the pipe or foreign substances are present, the sensor 670 detects this. Thus, the operation of the actuator 660 is controlled to vary the height of the probe 700 by the height of the unevenness or foreign matter, thereby preventing the end of the probe 700, which is in close contact with the surface of the pipe, from being worn or damaged.

Figure 15 shows that an air port 641 is provided at the contact part 640. It is an air port that blows pressurized air toward the surface of the pipe or sucks foreign substances present on the surface of the pipe. (641) is prepared.

In this way, when the air port 641 is provided at the contact part 640, foreign substances present on the surface of the pipe are removed by the air sprayed through the air port 641 before the probe 700 inspects the welded part of the pipe. Alternatively, foreign substances can be sucked in and removed through the air port 641, which not only prevents the transducer 700 from colliding with foreign substances and being damaged, but also prevents deterioration of inspection quality caused by foreign substances.

Figure 16 shows that a brush 642 and a detection unit 643 are provided in the contact part 640. The contact part 640 detects the brush 642 that rotates while in contact with the surface of the pipe and foreign substances on the surface of the pipe. Thus, a detection unit 643 that controls the operation of the brush 642 is provided.

In this way, when the brush 642 and the detection unit 643 are provided at the contact part 640, the detection unit 643 detects foreign substances present on the surface of the pipe before the probe 700 inspects the welded part of the pipe. , Accordingly, the brush 642 is operated to remove foreign substances, which not only prevents the transducer 700 from colliding with foreign substances and being damaged, but also prevents deterioration of inspection quality caused by foreign substances.

Meanwhile, the contact portion 640 provided on the holder unit 600 as described above allows the holder unit 600 to move stably without shaking when the holder unit 600 moves according to the movement of the traveling body 100. A roller 645 is provided.

This roller 645 is installed on the bottom of the contact portion 640 facing the surface of the pipe, so that when the holder unit 600 moves along the surface of the pipe, the roller 645 rolls in contact with the surface of the pipe. By moving, the movement of the holder unit 600 can be stabilized, and from this, the transducer 700 can precisely inspect the welded part of the pipe without shaking.

100: traveling body 110: traveling wheel
200: pivot unit 210: base plate
220: protruding plate 221: clutch
230: Clutch block 231: Liner
240: movable pin 250: fixed lever
260: Rail fixing part 261: Fixing piece
262: Guide Home 236: Moving
264: Rail fixing fastener 300: Guide rail
310: Rail groove 400: Tilting unit
410: moving block 420: rotating block
430: Protrusion 440: Moving block fixing fastener
450: torsion spring 460: stopper
470: Coil spring 500: Support unit
510: Assembly block 511: Cut section
520: Arm 521: Rotating body
530: Fastener 540: Fixing piece
600: Holder unit 610: Receptor
620: Elevating body 621: Locking protrusion
630: Control knob 640: Contact part
641: Airport 642: Brush
643: Sensing unit 650: Elastic member
660: Actuator 670: Sensor unit
700: probe

Claims (7)

A traveling body movably seated on the surface of the pipe;
A pivot unit installed on the front of the traveling body and pivoting;
A guide rail installed on the pivot unit;
A tilting unit composed of a moving block installed on the guide rail and moving linearly in the longitudinal direction of the guide rail, and a rotating block pivoting by being axially coupled to the moving block;
a support unit installed in front of the rotation block of the tilting unit and moving linearly in the longitudinal direction of the rotation block;
A holder unit installed in the support unit and equipped with a probe whose height is adjusted so that the probe is in close contact with the welded portion of the pipe; and
A marking unit installed on the traveling body and irradiating a laser beam to the surface of the pipe in which defects are detected by the probe to etch the surface. A non-destructive inspection device for water pipes capable of lining processing, comprising a.
In claim 1,
The marking unit is
A non-destructive inspection device for water pipes capable of lining processing, comprising a laser irradiator installed inside the traveling body to irradiate a laser beam to the surface of the pipe and etch it.
In claim 2,
The marking unit is
A non-destructive inspection device for water pipes capable of lining processing, comprising a cleaner installed in front of the laser irradiator to remove moisture by wiping the surface of the pipe before the laser beam etches the surface of the pipe.
In claim 2,
The marking unit is
A non-destructive inspection device for water pipes capable of lining processing, comprising a collection unit installed behind the laser irradiator to suck and collect fume generated when the surface of the pipe is etched by a laser beam.
In claim 1,
The pivot unit is
A base plate fixed to the front of the traveling body;
a protruding plate provided on both sides of the base plate, protruding forward of the traveling body, and having a clutch formed on an inner side;
a clutch block that is concentrically connected to the clutch of the protruding plate and pivots, and whose pivot angle is interrupted by contacting the clutch as it moves in the axial direction of the concentric shaft; and
A non-destructive inspection device for water pipes capable of lining processing, comprising a rail fixing unit provided on the clutch block and controlling the movement of the guide rail by pressing a rail groove formed on the guide rail.
In claim 5,
The rail fixing part is
A fixing piece formed on the front of the clutch block and located in the rail groove of the guide rail;
a guide groove formed in the clutch block adjacent to the fixing piece;
A moving piece located in the guide groove and moving closer to or farther away from the fixed piece; and
A rail fixing fastener that penetrates the clutch block and is screwed to the movable piece located in the guide groove to move the movable piece by rotation.
In claim 5,
The pivot unit is
a movable pin whose tip is exposed to the outside of the protruding plate and whose proximal end penetrates the protruding plate and is connected to the clutch block; and
A fixing lever pivotally fastened to the tip of the movable pin to bring the clutch block into close contact with the clutch formed on the inner surface of the protruding plate as it pivots.