JPH062222U - Orbit for ultrasonic inspection equipment - Google Patents

Abstract

(57) [Summary] [Purpose] It can be used for pipes with similar diameters, and can be easily set even if there are variations in pipe outer diameter and circumference due to pipe tolerances. Provide a track for a pipe ultrasonic inspection device. [Structure] A circumferential drive in which a probe module that is detachable in the circumferential direction of a pipe and that is mounted on the pipe and that performs ultrasonic flaw detection of a joint weld portion of the pipe is movably attached to its axial arm. In a track for a piping ultrasonic inspection apparatus that guides a unit, a number of thin strip-shaped rubber plates 11 and SUS plates 12 that are bent and laminated in an arc shape, and the rubber plates 11 and SUS plate 12
Turnbuckle 14 mounted between opposite ends of the
Equipped with.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a track for a pipe ultrasonic inspection apparatus.

[0002]

[Prior art]

 In order to perform ultrasonic flaw detection on the welded portion of the peripheral joint (connection portion) of the pipe, an apparatus has been proposed that automatically performs ultrasonic flaw detection while traveling along the outer circumference of the pipe.

FIG. 3 shows an example of the above apparatus. In the figure, 1 is a pipe and 2 is a track (guide rail) that is attached to and detached from the outer circumference of the pipe 1. In the track 2, the semicircular arc-shaped track pieces 2a, 2b made of a rigid body are engaged with each other by the hinge part 2c, and joint parts 2d, 2e are provided at the ends opposite to the hinge part 2c, respectively. The track 2 can be detached from the pipe 1 by releasing the engagement of the joint parts 2d and 2e and opening both track pieces 2a and 2b around the hinge part 2c as shown in FIG. When the pipe 1 is attached to the outer periphery, the reverse operation may be performed.

Reference numeral 3 denotes an integrally provided connector box 4 for obtaining electric power from the outside, and an axial arm 5 extending parallel to the axial direction of the pipe 1 and arranged at a predetermined distance from the pipe 1. It is a circumferential drive unit and has guide wheels 6a, 6b and 7a, 7b attached to each pair across the track 2. A probe module 8 that moves in parallel with the axial arm 5, that is, in the axial direction of the pipe 1, is attached to the axial arm 5. Further, 9 is a roller chain for device installation.

In the ultrasonic flaw detection inspection of the welded portion of the pipe 1 by the probe module 8, the guide wheels (for example, 6a and 7a) on the drive side are rotated by a motor to guide the guide wheels 6a, 6b and 7a, 7b. Circulates on the outer peripheral surface of the pipe 1 in the circumferential direction while being axially regulated by the track 2, so that the circumferential drive unit 3 is guided by the track 2 and rotates in the circumferential direction. Therefore, the probe module 8 at the position of the welded portion also rotates in the circumferential direction, so that ultrasonic flaw detection inspection is performed over the entire circumferential direction of the welded portion. The position of the probe module 8 can be varied within the range of the length of the axial arm 5, but when inspecting a portion exceeding the range, the mounting position of the track 2 is changed as described above.

[0006]

[Problems to be solved by the device]

 By the way, there are various types of pipes subject to ultrasonic flaw detection with different diameters, and even with the same type of pipe, the pipe outer diameter and circumference are often different depending on the pipe tolerance.

On the other hand, the conventional track is made of a rigid body as described above, and the diameter of one type of track is uniquely determined. Therefore, a large number of tracks are required according to the pipes with different diameters. However, there was a problem that its management was complicated and costly. In addition, even with pipes of the same diameter, it may not be possible to set the track depending on the pipe tolerance, and even if it can be set, the set operation may take time.

The present invention has been made on the basis of such a background, and can be commonly used for pipes having a small difference in diameter, and the pipe outer diameter and the circumference can be varied depending on the pipe tolerance. The purpose of the present invention is to provide a track for a pipe ultrasonic inspection device that can be easily set even if there is fluctuation.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, a probe module which is detachably attached to the outer periphery of a pipe and which is mounted on the pipe and which performs ultrasonic flaw detection of a joint weld portion of the pipe has an axial arm. A plurality of thin strip-shaped flexible plates that are bent and laminated in an arc shape in a track for a pipe ultrasonic inspection apparatus that guides a circumferential drive unit that is movably attached to The structure is provided with a length adjusting member attached between opposite ends of the plate.

[0010]

[Action]

 By stacking a number of thin strip-shaped flexible plates, a thickness sufficient to be sandwiched by the guide wheels of the circumferential drive unit is secured, and the thin strip-shaped flexible plates conform to the outer peripheral shape of the pipe. Fit tightly. On the other hand, when the length adjusting member is operated, the diameter of the closed loop flexible plate can be expanded or narrowed in accordance with the pipe outer diameter.

[0011]

【Example】

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

FIG. 1 is a front view of a pipe ultrasonic inspection apparatus track according to an embodiment, and FIG. 2 is a vertical cross-sectional front view of a turnbuckle that constitutes a part thereof.

In the figure, 11 is a thin strip-shaped rubber plate, and 12 is a thin strip-shaped SUS plate which is laminated on the rubber plate 11 in the same manner, and is formed into an arc shape having a predetermined curvature. ing. Reference numeral 13 denotes a belt that bundles the rubber plate 11 and the SUS plate 12 in a laminated state so as not to shift, and is appropriately provided at arbitrary intervals in the circumferential direction. Reference numeral 14 is a turnbuckle that connects opposite ends when a bundle of the rubber plate 11 and the SUS plate 12 is set along the outer periphery of the pipe 1 shown in FIG.

The guide wheels 6a, 6b and 7a, 7b shown in FIG. 3 sandwich the track formed by the bundle of the rubber plate 11 and the SUS plate 12 and are guided to the track by the guide wheels 6a, 6b and 7a, 7b. The bundle needs to have a predetermined thickness, and the number of SUS plates 12 is determined from the thickness of the entire track.

Next, the structure of the turnbuckle 14 will be described with reference to FIG.

Yokes 15 and 16 are attached to opposite ends of the bundle of the rubber plate 11 and the SUS plate 12, respectively, so as to face each other. Bosses 17 and 18 are fitted in the formed recesses, respectively. At the tips of the bosses 17 and 18, screws 19 and 20 having different thread cutting directions are provided so as to project in a direction parallel to the rubber plate 11 and the SUS plate 12. Further, through holes 21 and 22 are formed in the central portions of the bosses 17 and 18 at right angles to the screws 19 and 20. Pins 23 and 24 are fitted into the through holes 21 and 22, respectively, and both ends of the pins 23 and 24 are pivotally attached to the facing surfaces of the recesses of the yokes 15 and 16, so that the bosses 17 and 18 are It is engaged with the yokes 15 and 16. Reference numeral 25 denotes a rotary operation body screwed between the screws 19 and 20, and can rotate both rightward and leftward. For example, the rightward rotation causes the screws 19 and 20 to enter the inside, and the yokes 15 and 16 can be rotated. The distance between them is shortened, in other words, the diameters of the closed loop rubber plate 11 and the SUS plate 12 are reduced, while the screws 19 and 20 are relatively moved outward by the left rotation to increase the diameter. You can do it. The turnbuckle 14 is composed of these members described above.

Next, the operation of the orbit composed of the laminated plates 11 and 12 and the turnbuckle 14 will be described. For example, the rotary operation body 25 of the turnbuckle 14 can be fed from one or both of the screws 19 and 20. In the removed state, the rubber plate 11 and the SUS plate 12 are rotated along the outer periphery of the pipe 1, the two yokes 15 and 16 of the turnbuckle 14 are faced to each other, and the rotary operation body 25 is rotated to operate. The rotary operation body 25 and both screws 19 and 20 are screwed together. Then, when the rubber plate 11 on the inner peripheral surface tightly fits the outer peripheral surface of the pipe 1, the rotating operation of the rotating operation body 25 is stopped. In this state, the circumferential drive unit 3 shown in FIG. 3 is set in the pipe 1, and the rubber plate 11 and the laminated SUS plate 12 are sandwiched by the guide wheels 6a, 6b and 7a, 7b to carry out the ultrasonic flaw detection described above. Run.

In the track of this embodiment, which is composed of the rubber plate 11 and the laminated SUS plate 12 (or only the SUS plate 12) and the turnbuckle 14, the rubber plate 11 and the SUS plate 12 are Since it has flexibility, it can adapt to the outer peripheral shape of the pipe 1, and even if the pipe outer diameter and peripheral length vary due to pipe tolerance, they can be absorbed and fitted, and the setability is improved. Further, the diameter of the closed loop of the plates 11 and 12 can be changed by the rotation operation of the rotary operation body 25 to accommodate pipes having different diameters.

[0019]

[Effect of device]

 In the present invention, since a plurality of thin strip-shaped flexible plates that are stacked and a length adjusting member that connects both ends in an arc state constitute a track for a pipe ultrasonic inspection apparatus, the flexible plate is connected to the pipe. It can be fitted tightly to the outer circumference of the track, which can improve the setting of the track on the pipe.

Further, since the diameter of the closed-loop flexible plate can be changed within a predetermined range by operating the length adjusting member, it can be applied to a plurality of types of pipes having different diameters within that range. This makes it possible to increase versatility and add value.

[Brief description of drawings]

FIG. 1 is a front view of a track for a pipe ultrasonic inspection apparatus according to an embodiment of the present invention.

FIG. 2 is a vertical sectional front view of a turnbuckle forming a part of a track for a pipe ultrasonic inspection apparatus according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a state in which a conventional automatic ultrasonic inspection device is set in a pipe.

FIG. 4 is a front view of a conventional track in an open state.

[Explanation of symbols]

 1 Piping 3 Circumferential Drive Unit 5 Axial Arm 8 Probe Module 11 Rubber Plate (Flexible Plate) 12 SUS Plate (Flexible Plate) 14 Turnbuckle (Length Adjusting Member)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Nishi, 1st Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishi Kawashima Harima Heavy Industries, Ltd. Yokohama 1 factory (72) Inventor Takayuki Maruyama New, Isogo-ku, Yokohama-shi, Kanagawa Nakahara Town No. 1 Ishikawajima Harima Heavy Industries Ltd. Yokohama 1st Factory

Claims (1)

[Scope of utility model registration request] 1. A circumferential direction in which a probe module is detachably attached to an outer circumference of a pipe and is movably attached to an axial arm of the pipe for performing ultrasonic flaw detection inspection of a joint weld portion of the pipe in a state of being attached to the pipe. A plurality of thin strip-shaped flexible plates that are bent and laminated in an arc shape and are attached between opposite ends of the flexible plate in a track for a piping ultrasonic inspection apparatus that guides a drive unit. A track for a pipe ultrasonic inspection apparatus, comprising: a length adjusting member.