CN217404183U - Fixed support for gamma ray flaw detection of close-packed tubes - Google Patents

Abstract

The utility model relates to a fixed support for gamma ray flaw detection of dense-arrangement pipes, which comprises a first fixed plate, a second fixed plate, a fixed rod and a source pipe support; the first fixing plate and the second fixing plate are arranged in parallel, the first fixing plate and the second fixing plate are detachably connected, the fixing rod is arranged on the second fixing plate, the other end of the fixing rod is connected with the source tube support, the source tube support is used for fixedly mounting the gamma ray source tube, and the height of the source tube support can be changed. The utility model discloses a dead lever and source pipe support's setting, when carrying out the transillumination to the part of unified specification, accurate fixed focus for the exposure that the staff can be unified has both reduced staff's intensity of labour, still makes the film blackness that the transillumination came out unanimous, and the formation of image is clear, has avoided the unclear condition of defect recognition. When parts with different specifications are transilluminated, the height of the source tube bracket is changed, so that the distance between the radioactive source and the welding line to be measured meets the requirement of the minimum transillumination focal length.

Description

Fixed support for gamma ray flaw detection of close-packed tubes

Technical Field

The utility model relates to a ray inspection auxiliary device technical field especially relates to a close-packed tube gamma ray detects a flaw and detects fixed bolster.

Background

At present, when a gamma source is used for carrying out ray inspection on a pipe on a heating surface of a steam boiler, such as a water-cooled wall, a wrapping wall and the like, the gamma source pipe and a probe are difficult to fix on the premise of meeting the minimum transillumination focal length.

In the prior art, a scaffold special for radiographic inspection is mostly arranged outside a heating surface to fix a gamma source tube and a probe, great inconvenience is brought to radiographic inspection work, and huge investment in time and cost is caused. In addition, in the process of flaw detection of the densely-arranged pipes at equal intervals, the transverse distance between the radioactive source and the welding line to be detected is not fixed due to the structural characteristics of the densely-arranged pipes when radiographic detection is carried out, the vertical distance between the radioactive source and the welding line to be detected cannot be adjusted, imaging difficulty is high, working efficiency is low, and film quality is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above-mentioned shortcoming and the not enough of prior art, the utility model provides a close-packed tube gamma ray flaw detection fixed bolster, it has solved the radiation source and has awaited measuring the transverse distance between the welding seam unfixed, the radiation source and the technical problem of the unable adjustment of perpendicular distance between the welding seam that awaits measuring.

(II) technical scheme

In order to achieve the above object, the utility model discloses a close calandria gamma ray radiographic inspection detects fixed bolster includes: the device comprises a first fixing plate, a second fixing plate, a fixing rod and a source tube bracket;

the first fixing plate with second fixed plate parallel arrangement, the first fixing plate with the connection can be dismantled to the second fixed plate, the dead lever set up in on the second fixed plate, the other end of dead lever with source pipe leg joint, source pipe support is used for fixed mounting gamma ray source pipe, source pipe support's height can be adjusted.

Optionally, a stud is arranged on the first fixing plate, a threaded hole corresponding to the stud is formed in the second fixing plate, a locking nut is arranged on the second fixing plate corresponding to the stud, and the stud can penetrate through the threaded hole to be in threaded connection with the locking nut.

Optionally, the connection between the fixing rod and the source tube support is located on the center line of the stud.

Optionally, the source tube holder comprises: a probe bracket and a telescopic mechanism;

the probe support is connected with a telescopic mechanism, the extending direction of the probe support is perpendicular to the moving direction of the telescopic mechanism, and the telescopic mechanism is used for adjusting and limiting the height of the probe support relative to the fixed rod.

Optionally, the telescopic mechanism comprises a sleeve, a telescopic pipe and a limiting assembly;

the first end of telescopic link with probe bracket swivelling joint, the telescopic link slide set up in the sleeve, the first end of spacing subassembly set up in the telescopic link, the second end of spacing subassembly can with sleeve looks joint is in order to restrict the telescopic link slides.

Optionally, the sleeve is provided with at least two rows of limiting holes arranged along the axis direction, and the limiting component can be clamped in any one of the limiting holes.

Optionally, the telescopic rod is provided with a mounting groove for mounting the limiting assembly;

the limiting assemblies comprise springs and limiting clamping blocks; one end of the spring is installed on the installation groove, the other end of the spring is connected with the limiting clamping block, and the limiting clamping block can slide in the limiting hole.

Optionally, a self-locking bearing is arranged between the first end of the telescopic rod and the probe bracket, and the self-locking bearing can control the probe bracket to rotate and fix relative to the telescopic rod.

Optionally, a pair of circular magnets is disposed on opposite sides of the first fixing plate and the second fixing plate, and the circular magnets can be attracted to the closely-spaced tubes.

Optionally, a circular groove for installing the circular magnet is formed in a position, corresponding to the circular magnet, of one side, opposite to the first fixing plate and the second fixing plate, and the height of the circular groove is equal to that of the circular magnet.

(III) advantageous effects

The utility model has the advantages that: the utility model discloses a dead lever and source pipe support's setting for this fixed bolster is fixed at the radiation source in the use and the lateral distance between the welding seam that awaits measuring. Meanwhile, the distance between the radioactive source and the welding line to be measured can be adjusted by adjusting the height of the source tube bracket, so that the requirement of the minimum transillumination focal length of different parts to be measured can be met.

This fixed bolster passes through the cooperation of dead lever and source pipe support when carrying out the transillumination to the transillumination part of unified specification, fixed focus that can be accurate for the staff can use unified exposure, has both reduced staff's intensity of labour, still makes the film blackness of transilluminating out unanimous, and the formation of image is clear, has avoided the unclear condition of film defect discernment. And the fixed support changes the height of the source tube support when transilluminating parts with different specifications so that the distance between the radioactive source and the welding line to be measured meets the requirement of the minimum transillumination focal length and the transillumination negative film can be imaged clearly. And the fixing support has simple structure and convenient assembly and disassembly, can ensure that the trans-illumination negative film can be imaged clearly, and can also effectively improve the working efficiency of workers.

Drawings

Fig. 1 is a schematic view of the overall structure of the dense-array tube gamma ray flaw detection fixing bracket of the present invention;

FIG. 2 is a schematic view of the source tube support structure of the dense-array tube gamma ray inspection fixing support of the present invention;

fig. 3 is the utility model discloses a spacing subassembly's of close-packed tube gamma ray radiographic inspection detects fixed bolster schematic structure view.

[ instruction of reference ]

1: a first fixing plate; 11: a stud;

2: a second fixing plate; 21: locking the nut;

3: fixing the rod;

4: a source tube support; 41: a probe holder; 42: a telescoping mechanism; 421: a sleeve; 4211: a limiting hole; 422: a telescopic rod; 4221: mounting grooves; 4222: a self-locking bearing; 423: a limiting component; 4231: a spring; 4232: a limiting clamping block;

5: a round magnet; 6: and (5) densely arranging the tubes.

Detailed Description

For a better understanding of the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1, the utility model provides a fixed bracket for gamma ray flaw detection in close-packed tubes, which comprises a first fixed plate 1, a second fixed plate 2, a fixed rod 3 and a source tube bracket 4; first fixed plate 1 and 2 parallel arrangement of second fixed plate, first fixed plate 1 can dismantle with second fixed plate 2 and be connected, and dead lever 3 sets up on second fixed plate 2, and the other end and the source pipe support 4 of dead lever 3 are connected, and source pipe support 4 is used for fixed mounting gamma ray source pipe, and the height of source pipe support 4 can be adjusted.

In this embodiment, the utility model discloses a fixed bolster passes through dead lever 3 and sets up on second fixed plate 2, the other end and the source pipe support 4 of dead lever 3 are connected, make this fixed bolster radiation source and the lateral distance between the welding seam that awaits measuring fixed in the use, consequently, then need not to consider the lateral transillumination distance at the transillumination in-process, and through 3 fixed source pipe supports 4 of dead lever, the influence at transillumination in-process external weather factor has been avoided, it is unclear to have avoided the probe to rock the transillumination formation of image that leads to, make the film formation of image of transillumination more clear stable. And the source tube support 4 with adjustable height makes the fixed support mount in different transillumination parts, according to the specification of different transillumination parts, the minimum transillumination focal length required by transillumination is different, and the distance between the radioactive source and the welding seam to be measured can meet the requirement of the minimum transillumination focal length by adjusting the height of the source tube support 4. And, through the height of adjustment source pipe support 4 can make formation of image more clear during the transillumination, through the cooperation of dead lever 3 and source pipe support 4 when carrying out the transillumination to the transillumination part of unified specification, fixed focus that can be accurate for the staff can use unified exposure, increases staff's work efficiency, makes the film blackness that the transillumination was come out unanimous, and the formation of image is clear, has avoided the unclear condition of film defect discernment.

Referring to fig. 1, a stud 11 is arranged on a first fixing plate 1, a threaded hole corresponding to the stud 11 is formed in a second fixing plate 2, a lock nut 21 is arranged on the second fixing plate 2 corresponding to the stud 11, and the stud 11 can penetrate through the threaded hole to be in threaded connection with the lock nut 21. The connection of the fixing rod 3 and the source tube support 4 is located on the center line of the stud 11.

In the embodiment, the fixing bracket places the first fixing plate 1 and the second fixing plate 2 at the lower part of the weld joint to be measured in the using process, the first fixing plate 1 penetrates through the pipe gap of the dense-row pipe 6 to be measured, and the first fixing plate 1 is in threaded connection with a locking nut 21 arranged on the second fixing plate 2 through a stud 11. This kind of connected mode is through simple structure, both fixed first fixed plate 1 and second fixed plate 2, the dismouting of first fixed plate 1 and second fixed plate 2 of being convenient for, can also make gamma ray flaw detection device can realize being separated by 90 trans-illumination to left and right sides calandria weld crater through this structure, make it can once trans-illumination 2 oval formation of image through this structure, avoided the unclear phenomenon of an oval film both sides defect discernment, make the trans-illumination formation of image clearer, the discernment to the seam defect is more accurate.

As shown in fig. 2, the source tube holder 4 includes a probe holder 41 and a telescopic mechanism 42; the probe bracket 41 is connected with a telescopic mechanism 42, the extending direction of the probe bracket 41 is vertical to the moving direction of the telescopic mechanism 42, and the telescopic mechanism 42 is used for adjusting and limiting the height of the probe bracket 41 relative to the fixed rod 3.

In this embodiment, the telescopic mechanism 42 is arranged to enable the height of the probe bracket 41 relative to the fixed rod 3 to be changed, when different parts to be detected need to be detected, the minimum transillumination focal distance required by transillumination is different according to the specification of different transillumination parts, and the fixed bracket adjusts the height of the telescopic mechanism 42 relative to the fixed rod 3, so as to adjust the focal distance from the radioactive source to the weld to be detected. The transillumination imaging is clearer by adjusting the focal distance from the radioactive source to the welding line to be detected, and the flaw detection of the welding line is more accurate.

Referring to fig. 2 and 3, the telescoping mechanism 42 includes a sleeve 421, a telescoping tube and stop assembly 423; the first end and the probe support 41 swivelling joint of telescopic link 422, telescopic link 422 slide and set up in sleeve 421, and the first end of spacing subassembly 423 sets up in telescopic link 422, and the second end of spacing subassembly 423 can be with sleeve 421 looks butt in order to restrict telescopic link 422 and slide.

In this embodiment, the telescopic rod 422 is slidably disposed in the sleeve 421, and the fixed bracket changes the height of the probe bracket 41 relative to the fixed rod 3 by sliding the telescopic rod 422, so as to adjust the focal length of the radiation source to the weld to be measured. Thereby adjust the focus of radiation source to the welding seam that awaits measuring through the slip of adjustment telescopic link 422 and make the perspective image more clear accurate. And the limiting component 423 is arranged to limit the sliding of the telescopic rod 422 by clamping the second end of the limiting component 423 with the sleeve 421 when the telescopic rod 422 slides to the minimum focal length required by transillumination, so as to fix the height of the probe bracket 41. Moreover, the telescopic mechanism 42 has a simple structure, is convenient to operate, and is convenient for large-scale factory manufacturing and use.

As shown in fig. 2, the sleeve 421 has at least two rows of limiting holes 4211 arranged along the axial direction, and the limiting component 423 can be engaged with any one of the limiting holes 4211. The telescopic rod 422 is provided with a mounting groove 4221 for mounting the limiting component 423;

the limiting assemblies 423 comprise springs 4231 and limiting clamping blocks 4232; one end of the spring 4231 is mounted on the mounting groove 4221, the other end of the spring 4231 is connected with a limit clamping block 4232, and the limit clamping block 4232 can slide in the limit hole 4211.

In this embodiment, when the fixing bracket is arranged on different dense-arrangement pipes 6 to be tested and the height of the probe bracket 41 needs to be changed, an external force is applied to the limiting clamping block 4232, so that the spring 4231 connected with the limiting clamping block 4232 is compressed, the limiting clamping block 4232 is separated from the limiting hole 4211 and is contracted into the installation groove 4221, at this time, the telescopic rod 422 is rotated, so that the limiting clamping block 4232 and the limiting hole 4211 are no longer located on the same straight line, and at this time, the telescopic rod 422 can slide freely in the sleeve 421; when the telescopic rod 422 slides to the height required by the component to be tested, the telescopic rod 422 is rotated again, so that the limiting clamping block 4232 and the limiting hole 4211 are restored to the same straight line, at the moment, the limiting clamping block 4232 is popped out of the mounting groove 4221 under the action of the elastic force of the spring 4231, the limiting clamping block 4232 is clamped with the limiting hole 4211, and the height of the probe support 41 is fixed. Therefore, the focal length between the radioactive source and the welding line to be measured meets the requirement of the minimum transillumination focal length of the part to be measured.

In a preferred embodiment, a self-locking bearing 4222 is disposed between the first end of the telescopic rod 422 and the probe support 41, and the self-locking bearing 4222 can control the probe support 41 to rotate and fix relative to the telescopic rod 422.

In this embodiment, the detailed structure of the self-locking bearing 4222 is referred to CN201810461412.3, the first end of the telescopic rod 422 is connected to the probe through the self-locking bearing 4222, and the probe support 41 can rotate and be fixed relative to the telescopic rod 422 through the self-locking bearing 4222. The arrangement of the self-locking bearing 4222 enables the probe support 41 to be capable of imaging more clearly during gamma ray transillumination flaw detection by adjusting the angle of the probe support 41 under the condition of high fixation, the number of imaging is not limited by the structure of the dense-row tube 6 to be detected completely, and the identification of the welding seam defects after transillumination is more accurate.

Referring to fig. 1, a pair of circular magnets 5 are disposed on opposite sides of the first fixing plate 1 and the second fixing plate 2, and the circular magnets 5 can be attached to the dense-packed tubes 6. The round magnet 5 department that corresponds in the relative one side of first fixed plate 1 and second fixed plate 2 all offers the circular recess that is used for installing round magnet 5, and the circular recess equals with round magnet 5's height.

In this embodiment, since the dense-packed tubes 6 are used in a large number, they are generally made of an iron alloy. Circular grooves for mounting the circular magnets 5 are formed in the first fixing plate 1 and the second fixing plate 2 of the fixing bracket, and the circular magnets 5 are mounted in the circular grooves. Since the height of the circular groove is equal to that of the circular magnet 5, the surfaces of the first and second fixing plates 1 and 2 can be kept smooth. The setting of circle magnet 5 on first fixed plate 1 and the second fixed plate 2, make this fixed bolster in the in-process of using the installation, pass the clearance of waiting to survey the pipe as first fixed plate 1, when being located the opposite side of waiting to survey the pipe, circle magnet 5 can adsorb on the close-packed tube 6 that awaits measuring, avoided the staff to last handheld first fixed plate 1, the both hands of staff have been liberated, staff's intensity of labour has been reduced, work efficiency is improved, make first fixed plate 1 and second fixed plate 2 can be more firm simultaneously, reliable setting is on the close-packed tube 6 that awaits measuring.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a close-packed tube gamma ray radiographic inspection detects fixed bolster which characterized in that, the fixed bolster includes: the device comprises a first fixing plate, a second fixing plate, a fixing rod and a source tube bracket;

the first fixed plate with second fixed plate parallel arrangement, the first fixed plate with the second fixed plate can be dismantled and be connected, the dead lever set up in on the second fixed plate, the other end of dead lever with source pipe leg joint, source pipe support is used for fixed mounting gamma ray source pipe, source pipe support's height can be adjusted.

2. The dense-array tube gamma ray flaw detection fixing bracket according to claim 1, wherein a stud is arranged on the first fixing plate, a threaded hole corresponding to the stud is formed in the second fixing plate, a lock nut is arranged on the second fixing plate corresponding to the stud, and the stud can pass through the threaded hole to be in threaded connection with the lock nut.

3. The dense-packed gamma ray inspection fixture of claim 2 wherein the connection between the fixture bar and the source tube mount is at the centerline of the stud.

4. The close-packed gamma ray inspection fixture of any one of claims 1-3 wherein the source tube holder comprises: a probe bracket and a telescopic mechanism;

the probe support is connected with a telescopic mechanism, the extending direction of the probe support is perpendicular to the moving direction of the telescopic mechanism, and the telescopic mechanism is used for adjusting and limiting the height of the probe support relative to the fixed rod.

5. The dense row tube gamma ray inspection detection fixture of claim 4 wherein the telescoping mechanism comprises a sleeve, a telescoping rod, and a stop assembly;

the first end of telescopic link with probe bracket swivelling joint, the telescopic link slide set up in the sleeve, the first end of spacing subassembly set up in the telescopic link, the second end of spacing subassembly can with sleeve looks joint is in order to restrict the telescopic link slides.

6. The fixed rack for gamma ray flaw detection of dense-row tubes according to claim 5, wherein the sleeve is provided with at least two rows of limiting holes arranged along the axial direction, and the limiting component can be clamped in any one of the limiting holes.

7. The dense-array gamma ray flaw detection fixing bracket of claim 6, wherein the telescopic rod is provided with an installation groove for installing the limiting assembly;

the limiting assemblies comprise springs and limiting clamping blocks; one end of the spring is installed on the installation groove, the other end of the spring is connected with the limiting clamping block, and the limiting clamping block can slide in the limiting hole.

8. The dense-row tube gamma ray flaw detection fixing bracket of claim 5, wherein a self-locking bearing is arranged between the first end of the telescopic rod and the probe bracket, and the self-locking bearing can control the probe bracket to rotate and fix relative to the telescopic rod.

9. The gamma ray flaw detection fixing bracket for densely packed tubes according to any one of claims 1 to 3, wherein a pair of circular magnets are provided on each of opposite sides of the first fixing plate and the second fixing plate, and the circular magnets can be attached to the densely packed tubes.

10. The fixed rack for gamma ray flaw detection of dense-packed tube of claim 9, wherein a circular groove for mounting the circular magnet is formed at a position corresponding to the circular magnet on the opposite side of the first fixed plate and the second fixed plate, and the height of the circular groove is equal to the height of the circular magnet.

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