JPH09113246A - System for detecting weld position - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system which has a simple constitution, can quickly and efficiently detect a weld position, and has a labor saving effect by detecting the position of an attaching/detaching device which travels on a guide rail and can be attached/ detached through one action with a position detecting means. SOLUTION: The heat transfer pipe coil 17 of a steam generator pipe is put of frames 16 so that a plurality of welding points 18 can be arranged in a line. In order to inspect the soundness of weld points 18, an X-ray inspection device 14 provided with an X-ray generator 12 which can move in the Y-axis direction and an image intensifier 13 respectively mounted on a flat truck 11 and gate-type truck 10 is moved in the X-axis direction on the rail 15. These guidance and control are performed in accordance with commands from a drive control room 9 for X-ray inspection device. On the other hand, an attaching/detaching device 2 which is set on the rail 1 and can be attached/detached through one action is moved and an inspector sets the device 2 through one action by visually confirming that the device 2 has moved to extension lines 19 and 20 extended in the X- and Y-axis directions. Thereafter, the inspector moves a position detecting means 3 and detects the position of the device 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weld position detecting system for detecting the position of an inspection point in X-ray inspection of a weld.

[0002]

2. Description of the Related Art In the conventional X-ray inspection of a welded portion, a portable X-ray inspection device is manually moved to the position of the welded portion to perform the X-ray inspection.

[0003]

However, in such a conventional welding portion position detecting system, a large amount of inspection time is required because the inspection device is manually set at the welding portion position. Further, a method of automatically moving the X-ray inspection apparatus has been considered, but there is a problem that an appropriate and simple means for automatically detecting the position of the welded portion is lacking.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a welding portion position detecting system which is quick and efficient by a simple means and has a great labor saving effect. .

[0005]

In order to achieve this object, according to the present invention, a guide rail having a plurality of guide portions and a guide rail which moves on the guide rail and is moved to the guide rail. Detachable attachment / detachment device and position detection means for detecting the position of the attachment / detachment device by moving on the guide rail by the guide portion are provided.

[0006]

1 to 3 are views showing an embodiment of a position detecting system according to the present invention.

As shown in FIG. 1, the heat transfer tube coil 17 of the steam generator tube is joined by butt welding of a plurality of heat transfer tubes, and the welding points 18 are aligned and arranged on the pedestal 16. In order to confirm the soundness of this welding point 18, an X-ray inspection apparatus 14 equipped with an X-ray generator 12 and an image intensifier 13 that are movable in the Y-axis direction on a gate type carriage 10 and a flat carriage 11, The rail 15 is moved in the X-axis direction, and further the gate type carriage 10 and the flat carriage 11 are moved in the Y-axis direction to guide them to the position of the welding point 18. This guidance control is performed by a command from the X-ray inspection apparatus drive control room 9.

On the other hand, the one-touch detachable attachment / detachment device 2 installed on the guide rail 1 having a plurality of guide holes 4 is moved along the guide holes 4. Next, the inspector visually confirms that the attachment / detachment device 2 has moved to the extension lines of the welding lines 19 and 20 extending in the X-axis and Y-axis directions with respect to the welding point 18, and sets the attachment / detachment device 2 with one touch. To do. The guide hole 4 is not limited to the hole, and other guide means can be used.

In this state, as shown in FIGS. 2 and 3, the knob 6 of the attachment / detachment device 2 is pushed to compress the spring 7, the clip 8 is inserted into the guide hole 4, and the knob 6 is rotated 90 degrees. By doing so, the clip 8 is closely fixed to the guide hole 4. After that, the position detecting means 3 is moved, the position of the attachment / detachment device 2 is detected by the sensor 5, and the signal is detected.
To the X-ray device drive control room 9. The above operation is welding point 1
The X-ray inspection apparatus 14 can be guided to the welding point 18 by the signals of both X-axis and Y-axis.

FIG. 4 is a perspective view of the embodiment of FIG. 5 and 6 are a side view and a front view of specific examples of the gate type carriage 10 and the flat carriage 11 on which the X-ray inspection apparatus 14 is mounted. The image intensifier 13 receives the image in which the X-rays from the X-ray generator 12 are transmitted through the welding point 18,
It is a device that detects the defects at the welding points 18 after the integration processing. The X-ray image image of the welding point 18 is continuously recorded and stored in an image processing device (not shown), and after the photographing is finished, the presence or absence of a defect is confirmed in the reproduced image.

[0011]

As described above, in the welding portion position detecting system according to the present invention, the one-touch attachable / detachable detachable device which is moved by being guided by the guide hole on the guide rail and the position of the detachable device. Since the effective position detecting means for detecting is provided, it becomes possible to detect the welded portion position quickly and efficiently with a great labor saving effect by a simple means.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a welded portion position detection system according to the present invention.

FIG. 2 is a diagram showing a guide rail, an attaching / detaching device, and a position detecting means of the welding position detecting system according to the present invention.

FIG. 3 is a partial view of an attachment / detachment device of the welding position detecting system according to the present invention.

FIG. 4 is a perspective view of the embodiment of FIG. 1;

FIG. 5 is a side view of a specific example of the X-ray inspection apparatus.

FIG. 6 is a front view of a specific example of an X-ray inspection apparatus.

[Explanation of symbols]

 1 Guide Rail 2 Attachment / Detachment Device 3 Position Detection Means 4 Guide Hole 5 Sensor 6 Knob 7 Spring 8 Clip 9 X-ray Device Drive Control Room 10 Gate Cart 11 Flat Cart 12 X-ray Generator 13 Image Intensifier 14 X-ray Inspection Device 15 Rail 16 Stand 17 Heat Transfer Tube Coil (Product to be Inspected) 18 Welding Point 19 Welding Line (Y Axis) 20 Welding Line (X Axis)

Claims (1)

[Claims] 1. A guide rail having a plurality of guide portions, an attachment / detachment device which is moved on the guide rail by being guided by the guide portion and is attachable to and detachable from the guide rail, and the guide rail on the guide portion. A welded position detecting system having a position detecting means that is guided and moves to detect the position of the attachment / detachment device.