Pressure pipeline welding seam detection device

Abstract

The utility model discloses a pressure pipeline welding seam detection device, which relates to the field of welding seam detection of steel pipes and comprises a radiographic inspection generator, a fixing support is fixedly mounted outside the radiographic inspection generator, and a supporting wheel is rotatably mounted at the bottom end of the fixing support. Connecting pieces are fixedly installed at the two ends of a shell of the radiographic inspection generator, the connecting pieces are connected with two connecting rings through connecting mechanisms, one connecting ring is formed by splicing two butt joint rings, centering mechanisms are installed on the two butt joint rings, and the two butt joint rings are connected with the centering mechanisms. Every two adjacent butt joint rings distributed at the two ends of the radiographic inspection generator are fixedly connected through a fixing rod. According to the utility model, the centering mechanism and the connecting mechanism are arranged, so that the radiographic inspection generator can be kept at a detection position and the position of the radiographic inspection generator can be kept stable when the position of a welding seam is detected, and the accuracy of flaw detection is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of weld detection of steel pipe, and specifically relates to a pressure pipeline weld detection device. BACKGROUND

[0002] The ray flaw detector generator can emit a ray beam, and when the ray beam with uniform intensity transilluminates an object, if there are defects or structural differences in a local area of the object, the object will change the attenuation of the ray, so that the transmitted ray intensity of different parts is different.

[0003] After the pipeline is welded outdoors, the pipeline welding position needs to be detected to avoid the safety influence caused by unqualified welds, especially when the pipeline is used to transport medium with pressure, the ray flaw detector generator is generally used for detection in the prior art, and detection personnel need to constantly move the position of the ray flaw detector generator so as to detect different positions of the weld, so that the position of the ray flaw detector generator is difficult to maintain during the detection process, and therefore the detection result is not accurate enough. UTILITY MODEL CONTENTS

[0004] The utility model discloses a pressure pipeline weld detection device.

[0005] To achieve the above object, the utility model provides the following technical scheme: a pressure pipeline weld detection device, including the ray flaw detector generator, the outside fixed mounting of ray flaw detector generator has the fixed support, the bottom of fixed support rotatable mounting has the support wheel, the shell both ends of ray flaw detector generator all fixed mounting has the connecting piece, the connecting piece is linked with two connecting rings through the connecting mechanism, one connecting ring is spliced by two butt rings, and the centering mechanism is installed on two butt rings.

[0006] As a further scheme of the utility model: the connecting mechanism includes the chute that is arranged above the butt surface of two butt rings, and the installation groove is arranged on the outer side of two butt rings.

[0007] As a further scheme of the utility model: the connecting mechanism further includes two limiting pieces located at one end of the connecting piece, a connecting column is integrally formed between two limiting plates, a sliding piece is installed on the outer wall of the connecting column, the sliding piece is slidingly connected to the inner wall of the chute, and the bolt on the sliding plate passes through the installation groove and is screwedly connected with the bolt.

[0008] As a further scheme of the present utility model: the centering mechanism comprises a fixed lug fixedly connected to the outside of the butt joint ring, an inner wall of the fixed lug is threadedly connected with a screw rod, an outer end of the screw rod is fixedly connected with a handle, an inner end of the screw rod is rotatably installed with a support seat, an inner side of the support seat is rotatably installed with a centering wheel.

[0009] As a further scheme of the present utility model: an upward protruding sliding plate is integrally formed on one side of the top end plate of the support seat, a square slot for the sliding plate to slide up and down is formed in the inside of the support seat.

[0010] As a further scheme of the present utility model: two outward protruding connecting plates are integrally formed below the butt joint ends of the two butt joint rings, the two connecting plates are fixedly connected through bolts and nuts.

[0011] Compared with the prior art, the present utility model has the beneficial effects that:

[0012] 1. By setting the centering mechanism and the connecting mechanism, the ray flaw detector generator can be kept in the detection position and its position can be kept stable when the butt weld position is detected, so that the flaw detection precision is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the present utility model;

[0014] Figure 2 is an installation schematic view of the centering mechanism of the present utility model;

[0015] Figure 3 is an installation schematic view of the connecting mechanism of the present utility model;

[0016] Figure 4 is a connection schematic view of the sliding plate and the connecting piece of the present utility model.

[0017] In the figure: 1, ray flaw detector generator; 2, fixed support; 3, support wheel; 4, connecting piece; 5, butt joint ring; 6, sliding groove; 7, fixed lug; 8, installation groove; 9, fixed rod; 10, sliding plate; 11, support seat; 12, centering wheel; 13, screw rod; 14, limiting plate; 15, sliding piece; 16, connecting plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0019] Please refer to Figures 1-4 , the utility model discloses a pressure pipeline weld detection device, including radiographic inspection generator 1, the outside fixed mounting of radiographic inspection generator 1 has fixed support 2, the bottom of fixed support 2 rotatable mounting has support wheel 3, the shell both ends of radiographic inspection generator 1 are all fixedly installed with connecting piece 4, and connecting piece 4 is connected with two connecting rings through connecting mechanism, and one connecting ring is spliced into by two butt rings 5, and the centering mechanism is installed on two butt rings 5, and is fixedly connected through fixed rod 9 between two butt rings 5 adjacent to the both ends of radiographic inspection generator 1, and the lower side of butt end of two butt rings 5 is integrally formed with the connecting plate 16 that projects outward, and two connecting plates 16 are fixedly connected through bolt and nut.

[0020] In the embodiment: first, place radiographic inspection generator 1 on the outer periphery of the pipeline, and make the ray output position of radiographic inspection generator 1 align with the position of the two pipeline welds, then butt joint installation is carried out on two connecting rings through connecting mechanism and connecting piece 4, and the connecting plate 16 on the two butt rings 5 of one connecting ring is fixedly installed using bolt and nut, after installation is completed, the center of the connecting ring is overlapped with the center of the pipeline by rotating four centering mechanisms, at this time, the connecting mechanism can be fixed, after fixing is completed, when radiographic inspection generator 1 is powered on, the connecting ring is self-rotated around the center of the pipeline by the rotating force applied to the connecting ring by the centering mechanism, so as to drive radiographic inspection generator 1 to rotate, and the welds at the welding positions of the pipeline are detected circumferentially.

[0021] Please refer to Figure 1 、 Figure 3 and Figure 4 , the connecting mechanism includes the chute 6 that is opened in the upper side of the butt joint surface of two butt rings 5, and the installation groove 8 is opened in the outer side of two butt rings 5 located at the outer side of the chute 6, and the connecting mechanism further includes two limiting plates 14 located at one end of the connecting piece 4, and the connecting column is integrally formed between the two limiting plates 14, the outer wall of the connecting column is installed with the sliding part 15, the sliding part 15 is slidingly connected to the inner wall of the chute 6, and the bolt on the sliding part 15 passes through the installation groove 8 and is threadedly connected with the bolt.

[0022] In the embodiment: when the butt joint is carried out on two butt rings 5, the chute 6 on the butt ring 5 is clamped on the outer side of the sliding part 15, then the two butt rings 5 are fixed using bolt and nut, then the center of the butt ring 5 is overlapped with the center of the pipeline by rotating the centering mechanism, at this time, the bolt passes through the sliding part 15 and passes through the installation groove 8, then the nut is fastened, at this time, the sliding part 15 no longer relatively slides with the butt ring 5;

[0023] When the rotating device rotates, the rotating butt ring 5 can drive radiographic inspection generator 1 to rotate through the connecting mechanism.

[0024] The design of the two limiting plates 14 can realize that the sliding piece 15 is installed between the two limiting plates 14.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3 , the centering mechanism comprises a fixed lug 7 fixedly connected to the outer side of the butt joint ring 5, the inner wall of the fixed lug 7 is threadedly connected with a screw rod 13, the outer end of the screw rod 13 is fixedly connected with a handle, the inner end of the screw rod 13 is rotatably installed with a support seat 11, and the inner side of the support seat 11 is rotatably installed with a centering wheel 12.

[0026] In the embodiment: by rotating the handle, the handle drives the screw rod 13 to rotate, at this time the screw rod 13 moves towards the center of the pipe while rotating, the moving screw rod 13 drives the support seat 11 to move synchronously, and the moving support seat 11 can drive the centering wheel 12 to move, so that the effect of adjusting the position of the butt joint ring 5 is realized.

[0027] Please refer to Figure 2 and Figure 3 , the top end plate of the support seat 11 is integrally formed with an upward protruding sliding plate 10 on one side, and a square groove for the sliding plate 10 to slide up and down is formed in the inside of the support seat 11.

[0028] In the embodiment: in the process of moving the support seat 11 up and down, the support seat 11 drives the sliding plate 10 to slide along the square groove, so that the support seat 11 can be prevented from rotating synchronously with the screw rod 13.

[0029] The above describes only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pressure pipeline weld inspection apparatus comprising a radiographic generator (1), characterized in that, The external fixed installation of the ray flaw generator (1) is provided with a fixed support (2), the bottom end of the fixed support (2) is rotatably provided with a supporting wheel (3), the shell of the ray flaw generator (1) is fixedly provided with a connecting piece (4) at both ends, the connecting piece (4) is connected with two connecting rings through a connecting mechanism, one connecting ring is spliced by two butt rings (5), a centering mechanism is installed on the two butt rings (5), and the two butt rings (5) adjacent to the both ends of the ray flaw generator (1) are fixedly connected through a fixed rod (9).

2. A pressure pipe weld inspection apparatus according to claim 1, characterised in that, The connecting mechanism comprises a chute (6) opened above the butt surface of the two butt rings (5), and mounting grooves (8) are formed in the outer sides of the two butt rings (5) of the chute (6).

3. A pressure pipe weld inspection apparatus according to claim 2, characterised in that, The connecting mechanism further comprises two limiting plates (14) located at one end of the connecting piece (4), a connecting column is integrally formed between the two limiting plates (14), a sliding piece (15) is installed on the outer wall of the connecting column, the sliding piece (15) is slidably connected to the inner wall of the chute (6), and the bolt on the sliding piece (15) passes through the mounting groove (8) and is threadedly connected with the bolt.

4. A pressure pipe weld inspection apparatus according to claim 3, characterised in that, The centering mechanism comprises a fixed lug (7) fixedly connected to the outer side of the butt ring (5), a screw rod (13) is threadedly connected to the inner wall of the fixed lug (7), the outer end of the screw rod (13) is fixedly connected with a handle, the inner end of the screw rod (13) is rotatably provided with a supporting seat (11), and the inner side of the supporting seat (11) is rotatably provided with a centering wheel (12).

5. A pressure pipe weld inspection apparatus according to claim 4, wherein, The top end plate of the supporting seat (11) is integrally formed with an upward protruding sliding plate (10) on one side, and a square groove is formed in the inside of the supporting seat (11) for the upward and downward sliding of the sliding plate (10).

6. A pressure pipe weld inspection apparatus according to claim 2, wherein, The lower part of the butt end of the two butt rings (5) is integrally formed with an outward protruding connecting plate (16), and the two connecting plates (16) are fixedly connected through bolts and nuts.

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