CN210800447U - A ray source positioner for center transillumination pipeline girth weld - Google Patents
A ray source positioner for center transillumination pipeline girth weld Download PDFInfo
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- CN210800447U CN210800447U CN201921488866.6U CN201921488866U CN210800447U CN 210800447 U CN210800447 U CN 210800447U CN 201921488866 U CN201921488866 U CN 201921488866U CN 210800447 U CN210800447 U CN 210800447U
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Abstract
The utility model provides a ray source positioner for central transillumination pipeline girth joint relates to pipeline inspection equipment technical field, and the position control that has solved the ray source that exists among the prior art is more restricted, can not adjust in a flexible way in order to adapt to the technical problem of different demands. The ray source positioning device for the central transillumination pipeline girth weld comprises a base body and a fixed seat, wherein the fixed seat is connected with the base body through a telescopic folding mechanism; the movable frame is arranged on the fixed seat, and the position of a ray source used for the central transillumination pipeline girth weld and erected on the movable frame can be at least lifted or lowered along the vertical direction by the movable frame so as to align the ray source used for the central transillumination pipeline girth weld to the center of a workpiece. The utility model is used for a ray source position control is more nimble, and can adapt to the ray source positioner who is used for central transillumination pipeline girth joint that different pipeline diameters need.
Description
Technical Field
The utility model belongs to the technical field of pipeline inspection equipment technique and specifically relates to a ray source positioner that is used for central transillumination pipeline circumferential weld is related to.
Background
A radiographic inspection transillumination mode is performed in a second part of nondestructive testing of pressure bearing equipment of NB/T47013.2-2015: it is clearly indicated in the ray inspection that the transillumination modes are divided into five types, namely longitudinal seam transillumination, circular seam external transillumination, circular seam internal transillumination, double-wall single-image and double-wall double-image, according to the mutual relationship among a ray source, a workpiece and a film, wherein the circular seam internal transillumination is divided into circular seam internal transillumination small eccentricity, central transillumination and circular seam internal transillumination large eccentricity. The center transillumination ray source is superposed with the center of a circle of a workpiece, and has the advantages of uniqueness.
Advantage of central transillumination 1. it is both economical and efficient. It is known that the operating time of a ray camera is limited. If a central radiography method is used, either 100% transillumination or partial transillumination of the circumferential weld, all required negatives can be obtained by simply sticking the film on the corresponding outer surface and exposing it once. This not only reduces the number of exposures, but also greatly improves the work efficiency. 2. The machine is erected, the alignment is convenient, and the alignment is an important process of radiography. The quality of this process directly affects the quality of the radiograph. Therefore, we must carefully observe whether the machine is at the center of the workpiece and whether the distance between the source and the film is the same. If a central transillumination method is used, the installation of the machine is convenient, some auxiliary work is reduced, and the labor intensity is reduced. 3. The film has uniform blackness because the ray source is at the geometric center of the workpiece and the ray intensity of the outer surface of the central girth weld is the same everywhere.
It can be seen that the central transillumination method has very high requirements for the irradiation position and angle of the ray source, otherwise, the transillumination effect is seriously affected, however, in practical work, the central transillumination instrument is heavy and heavy, needs to move in the pipeline, and needs to be positioned at the central position of the girth weld of the pipeline after reaching the detection area, which has relatively high requirements for fixing the ray machine and transporting the central transillumination instrument.
The existing ray source positioning device for the pipeline circumferential weld comprises a quadrilateral frame body, wherein the quadrilateral frame body comprises a top edge, two side edges and a bottom edge, the outer wall of the top edge and the outer wall of one side edge are respectively provided with a measuring tape which is detachably connected with the top edge and the outer wall of the other side edge, the other side edge and the bottom edge are respectively provided with a movable push plate, and the movable push plate and the other side edge and the bottom edge are respectively movably connected. The ray source is fixed on the body, the ray source detection and the tape measure are utilized to assist in positioning and measuring the circumferential position of the defect of the circumferential weld of the pipeline, and the position of the defect on the weld is judged.
The applicant has found that the prior art has at least the following technical problems: in the practical work, pipelines with different diameters are faced, the position adjustment of the ray source sometimes has great difference, and the position adjustment of the ray source by the existing method is obviously relatively limited and cannot be flexibly adjusted to adapt to different requirements.
Disclosure of Invention
An object of the utility model is to provide a ray source positioner for center transillumination pipeline girth weld to the position control of the ray source that exists among the solution prior art is more limited, can not adjust in a flexible way in order to adapt to the technical problem of different demands. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a ray source positioner for central transillumination pipeline circumferential weld, including base body and fixing base, the fixing base with the base body passes through flexible folding mechanism and connects, after the folding of flexible folding mechanism, the fixing base is located inside the base body;
the fixing base is provided with a movable frame, a ray source for a central transillumination pipeline girth weld is erected on the movable frame, and the movable frame can at least lift or lower the position of the ray source for the central transillumination pipeline girth weld along the vertical direction, so that the ray source for the central transillumination pipeline girth weld aligns at the center of the workpiece.
Preferably, the movable frame comprises a first movable frame and a second movable frame, the first movable frame and the second movable frame are both provided with a fixed part, and a ray source for central transillumination of the pipeline circumferential weld is erected on the first movable frame and the second movable frame through the fixed part;
the first movable frame and/or the second movable frame are/is provided with height adjusting structures, and the height adjusting structures can at least lower or raise the positions of the first movable frame and/or the second movable frame so as to enable a ray source for a central transillumination pipeline girth weld to be aligned to the center of a workpiece.
Preferably, the first movable frame and the second movable frame both comprise a lower support frame and an upper support frame, the fixed part is arranged on the upper support frame, and the upper support frame can be sleeved on the lower support frame and can move up and down along the lower support frame; the height adjusting structure comprises a fixing hole arranged on the lower supporting frame and a plurality of positioning holes arranged on the upper supporting frame along the height direction of the upper supporting frame, and bolts penetrate through the positioning holes and are connected with the fixing hole.
Preferably, a guard plate is arranged at the peripheral edge of the base body, a first sliding block, a second sliding block and a first sliding rod are arranged on the base body, the first sliding block is fixedly arranged on the base body, and the second sliding block is arranged on the first sliding rod; a third sliding block, a fourth sliding block and a second sliding rod are arranged on the fixed plate, and the third sliding block and the fourth sliding block are arranged on the second sliding rod; the telescopic folding mechanism comprises a folding lifting frame, and one end of the folding lifting frame is connected with the first sliding block and the second sliding block; the other end of the folding lifting frame is connected with the third sliding block and the fourth sliding block.
Preferably, the telescopic folding mechanism further comprises a supporting column, the supporting column is fixed on the base body, a fixing hole is formed in the fixing plate, and the supporting column penetrates through the fixing hole and extends to the position above the fixing plate.
Preferably, the base body is further connected with a traveling wheel, and the base body can travel in the pipeline through the traveling wheel; wherein,
the base body is connected with the travelling wheels through a size adjustable structure, and the distance between at least part of the travelling wheels in the horizontal direction or the vertical direction can be changed by changing the size of the size adjustable structure; and/or, the base body is a size-changeable mechanism, and the distance between the walking wheels can be adjusted by changing the size of the base body in the horizontal direction or the vertical direction.
Preferably, the size adjustable structure comprises a fixing plate with a rectangular cavity, a left supporting plate and a right supporting plate which are in sliding fit are connected to inner cavities on two sides of the fixing plate respectively, and the left supporting plate and the right supporting plate are connected with the walking wheels on two sides of the base body respectively.
Preferably, a left rack is connected to the left supporting plate, a right rack is connected to the right supporting plate, a gear is arranged in the middle of the inner cavity of the fixing plate, and the left rack and the right rack are meshed with the gear.
Preferably, the both sides of base body are connected with auxiliary frame and auxiliary wheel, the auxiliary frame includes first link and second link, but first link is extending structure, the one end of first link with the one end of second link is articulated, the other end of first link with base body connects, the other end of second link with the auxiliary wheel is connected.
Preferably, the auxiliary frame further comprises a fastening structure, the fastening structure comprises a sleeve and a positioning block fixedly connected with the sleeve, a waist-shaped hole is formed in the second connecting frame, a positioning hole is formed in the positioning block, and a bolt can penetrate through the positioning hole and the waist-shaped hole to fix the second connecting frame and the positioning block.
The utility model has the advantages that: the utility model can raise or lower the position of the ray source device on the fixed seat by arranging the telescopic folding mechanism on the base body, and the height of the ray source device is basically consistent with the center height of a workpiece by preliminary adjustment of the telescopic folding mechanism; in addition, the refraction angle of the ray source is finely adjusted by lifting or lowering the movable frame, so that the ray source for the central transillumination pipeline girth weld is aligned with the center of the workpiece. Through adopting the utility model discloses a structural design for the ray source position control that the center shines is more convenient, and the range of application is wider moreover, is suitable for with the pipeline of various different diameters.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 2 is a schematic structural view of a part of the structure of the present invention;
FIG. 3 is a schematic structural view of a part of the structure of the first embodiment of the present invention;
FIG. 4 is a schematic structural view of an auxiliary frame according to a first embodiment of the present invention;
fig. 5 is a schematic structural view of a second embodiment of the present invention;
fig. 6 is a partial schematic structural view of a second embodiment of the present invention;
fig. 7 is a partial structural schematic view (one) of a third embodiment of the present invention;
fig. 8 is a partial structural schematic view (ii) of a third embodiment of the present invention;
fig. 9 is a top view of a portion of the structure of the present invention.
Figure 1-base body; 11-a first slider; 12-a second slide; 13-a first slide bar; 14-a support column; 15-guard board; 2-travelling wheels; 31-an auxiliary frame; 32-an auxiliary wheel; 33-a fastening structure; 311-a first square tube; 312-a second square tube; 313-a second link; 314-elongated holes; 315-threaded hole; 316-kidney shaped hole; 331-a sleeve; 332-a positioning block; 333-positioning holes; 341-a support seat; 342-a slide rail; 343-a slider; 344-connecting rod; 351-a fixed plate; 352-left support plate; 353-right support plate; 354-left rack; 355-right rack; 356-gear; 357-a drive device; 4, fixing a plate; 41-a third slider; 42-a fourth slider; 43-a second slide bar; 44-a fixation hole; 51-a first movable frame; 52-a second movable frame; 53-fixing the clamp; 6-folding lifting frame; 511-a first lower support; 512-first upper support frame; 513 — a first fixing hole; 514-first positioning hole; 521-a second lower support frame; 522-second upper support frame.
Detailed Description
The contents of the present invention and the differences between the present invention and the prior art can be understood with reference to fig. 1 to 9 and the text. The invention will be described in further detail below (including the preferred embodiments) with reference to the drawings and illustrative examples of some alternative embodiments of the invention. It should be noted that: any technical features and any technical solutions in this embodiment are one or more of various optional technical features or optional technical solutions, and for the sake of brevity, this document cannot exhaust all the alternative technical features and alternative technical solutions of the present invention, and it is not convenient for each embodiment of the technical features to emphasize that it is one of various optional embodiments, so those skilled in the art should know that: can replace any technical means or combine two or more technical means or technical characteristics of the utility model provides an arbitrary or more technical means or technical characteristics mutually and obtain new technical scheme. Any technical features and any technical solutions in the present embodiment do not limit the scope of the present invention, and the scope of the present invention should include any alternative technical solutions that can be conceived by those skilled in the art without creative efforts and new technical solutions that can be obtained by combining any two or more technical means or technical features provided by the present invention with each other by those skilled in the art.
The utility model provides a ray source position control is more nimble, and can adapt to the ray source positioner who is used for central transillumination pipeline girth joint that different pipeline diameters need.
The technical solution provided by the present invention will be explained in more detail with reference to fig. 1 to 9.
The utility model provides a ray source positioning device for a central transillumination pipeline circumferential weld, which comprises a base body and a fixed seat, wherein the fixed seat is connected with the base body through a telescopic folding mechanism;
the fixing base is provided with a movable frame, a ray source for a central transillumination pipeline girth weld is erected on the movable frame, and the movable frame can at least lift or lower the position of the ray source for the central transillumination pipeline girth weld along the vertical direction, so that the ray source for the central transillumination pipeline girth weld aligns at the center of the workpiece.
The utility model can raise or lower the position of the ray source device on the fixed seat by arranging the telescopic folding mechanism on the base body, and the height of the ray source device is basically consistent with the center height of a workpiece by preliminary adjustment of the telescopic folding mechanism; in addition, the refraction angle of the ray source is finely adjusted by lifting or lowering the movable frame, so that the ray source for the central transillumination pipeline girth weld is aligned with the center of the workpiece. Through adopting the utility model discloses a structural design for the ray source position control that the center shines is more convenient, and the range of application is wider moreover, is suitable for with the pipeline of various different diameters.
As an optional implementation manner, the movable frame comprises a first movable frame and a second movable frame, fixed parts are arranged on the first movable frame and the second movable frame, and a radiation source for a central transillumination pipeline girth weld is erected on the first movable frame and the second movable frame through the fixed parts;
the first movable frame and/or the second movable frame are/is provided with height adjusting structures, and the height adjusting structures can at least lower or raise the positions of the first movable frame and/or the second movable frame so as to enable a ray source for a central transillumination pipeline girth weld to be aligned to the center of a workpiece.
The telescopic folding mechanism is arranged on the base body, so that the position of the ray source device on the fixed seat can be raised or lowered, and the height of the ray source device is basically consistent with the center height of a workpiece through primary adjustment of the telescopic folding mechanism; in addition, the first movable frame and/or the second movable frame are/is provided with a height adjusting structure, the refraction angle of the ray source is finely adjusted, and the first movable frame and/or the second movable frame are/is lifted or lowered, so that the ray source for the central transillumination pipeline girth weld is aligned to the center of the workpiece.
As an optional implementation manner, each of the first movable frame and the second movable frame includes a lower support frame and an upper support frame, the fixed portion is disposed on the upper support frame, and the upper support frame can be sleeved on the lower support frame and can move up and down along the lower support frame; the height adjusting structure comprises a fixing hole arranged on the lower supporting frame and a plurality of positioning holes arranged on the upper supporting frame along the height direction of the upper supporting frame, and bolts penetrate through the positioning holes and are connected with the fixing hole.
The upper support frame is sleeved on the lower support frame and can move up and down along the lower support frame; then the position of the upper support frame on the lower support frame is adjusted by adjusting the relative position of the positioning hole and the fixing hole, and the height of the ray source is further adjusted.
As an optional implementation manner, guard plates are arranged at the peripheral edges of the base body, a first sliding block, a second sliding block and a first sliding rod are arranged on the base body, the first sliding block is fixedly arranged on the base body, and the second sliding block is arranged on the first sliding rod; a third sliding block, a fourth sliding block and a second sliding rod are arranged on the fixed plate, and the third sliding block and the fourth sliding block are arranged on the second sliding rod; the telescopic folding mechanism comprises a folding lifting frame, and one end of the folding lifting frame is connected with the first sliding block and the second sliding block; the other end of the folding lifting frame is connected with the third sliding block and the fourth sliding block.
Above-mentioned structure utilizes folding crane, highly adjusts the fixed plate, and then adjusts the holistic height of ray source device, utilizes the slider to slide on the slide bar, folds folding crane, in addition through the setting of backplate, can take in the fixed plate to the base originally internally, when can adjusting the ray source position, can reduce occupation space.
As an optional implementation manner, the telescopic folding mechanism further includes a supporting column, the supporting column is fixed on the base body, a fixing hole is provided on the fixing plate, and the supporting column passes through the fixing hole and extends to above the fixing plate.
Above-mentioned structure, the effect of location is played in the effect of support column, and the fixed plate can move along the support column when flexible beta structure lift removal.
As an optional implementation mode, a walking wheel is further connected to the base body, and the base body can walk in the pipeline through the walking wheel; wherein,
the base body is connected with the travelling wheels through a size adjustable structure, and the distance between at least part of the travelling wheels in the horizontal direction or the vertical direction can be changed by changing the size of the size adjustable structure; and/or, the base body is a size-changeable mechanism, and the distance between the walking wheels can be adjusted by changing the size of the base body in the horizontal direction or the vertical direction.
Through increase size adjustable structure between base body and walking wheel, adjust the interval between the walking wheel for this positioner can use the pipeline needs of different diameters.
As an optional implementation manner, the size-adjustable structure includes a supporting seat, a sliding rail, a sliding block, and a connecting rod, the supporting seat and the sliding rail are both disposed at the bottom of the base body, the connecting rod passes through a positioning hole disposed on the supporting seat and is connected to the sliding block, the connecting rod can slide in the positioning hole, the sliding block is matched with the sliding rail to drive the connecting rod connected to the sliding block to move along the sliding rail, and the traveling wheel is connected to the connecting rod.
Through setting up slide rail, slider, connecting rod, simple structure adjusts very conveniently moreover, adjusts suitable position, screws up through the bolt and fixes, makes the utility model discloses can adapt to the needs of different pipelines.
As an optional implementation manner, the size-adjustable structure comprises a fixing plate with a rectangular cavity, a left supporting plate and a right supporting plate which are in sliding fit are connected to inner cavities on two sides of the fixing plate respectively, and the left supporting plate and the right supporting plate are connected to the walking wheels on two sides of the base body respectively.
As an optional implementation manner, a left rack is connected to the left support plate, a right rack is connected to the right support plate, a gear is arranged in the middle of the inner cavity of the fixed plate, and the left rack and the right rack are both meshed with the gear.
The structure is adjusted through rack and gear transmission, the walking wheels on two sides are adjusted consistently, adjustment precision is guaranteed, and the left support plate and the right support plate are arranged in the rectangular cavity of the fixing plate, so that the left support plate and the right support plate can be supported, and bearing capacity is guaranteed.
As an optional implementation manner, an auxiliary frame and an auxiliary wheel are connected to two sides of the base body, the auxiliary frame includes a first connecting frame and a second connecting frame, the first connecting frame is of a telescopic structure, one end of the first connecting frame is hinged to one end of the second connecting frame, the other end of the first connecting frame is connected to the base body, and the other end of the second connecting frame is connected to the auxiliary wheel.
As an optional implementation manner, the auxiliary frame further includes a fastening structure, the fastening structure includes a sleeve and a positioning block fixedly connected to the sleeve, a kidney-shaped hole is provided on the second connecting frame, a positioning hole is provided on the positioning block, and a bolt can pass through the positioning hole and the kidney-shaped hole to fix the second connecting frame and the positioning block.
According to the structure, the auxiliary frame and the auxiliary wheels are additionally arranged, when a large pipeline is operated, the auxiliary wheels are in contact with the ground through adjustment of the auxiliary frame and the auxiliary wheels, so that the distance between the walking wheels is adjusted, and the auxiliary frame is provided with a telescopic structure and can be adjusted as required; in addition, when the auxiliary wheel is not required to be in direct contact with the ground, the second support frame and the first support frame can be horizontally arranged and fixed through the fastening structure, the sleeve of the fastening structure is sleeved on the outer side of the second square pipe, the thickness of the second support frame is the same as that of the second square pipe, the second support frame and the first support frame can be fixed through the sleeve, at the moment, the fastening structure can be directly in contact with the walls on the two sides of the pipeline, the supporting effect is achieved, the pipeline crawler can move forwards more stably, and side turning is prevented.
Example 1:
the utility model provides a ray source positioning device for a central transillumination pipeline circumferential weld, which comprises a base body 1, an auxiliary frame 31, an auxiliary wheel 32, a walking wheel 2, a fixed seat 4 and a folding lifting frame 5, wherein the walking wheel 2 is arranged at two sides of the base body 1,
a guard plate 15 is arranged on the periphery of the base body 1, a first sliding block 11, a second sliding block 12 and a first sliding rod 13 are arranged on the base body 1, the first sliding block 11 is fixedly arranged on the base body 1, and the second sliding block 12 is arranged on the first sliding rod 13; a third sliding block 41, a fourth sliding block 42 and a second sliding rod 43 are arranged on the fixed plate 4, and the third sliding block 41 and the fourth sliding block 42 are arranged on the second sliding rod 43; one end of the folding lifting frame 6 is connected with the first sliding block 11 and the second sliding block 12; the other end of the folding crane 6 is connected with the third slide block 41 and the fourth slide block 42.
The supporting column 14 is fixed on the base body 1, a fixing hole 44 is arranged on the fixing plate 4, and the supporting column 14 passes through the fixing hole 44 and extends to the upper part of the fixing plate 4.
A first movable frame 51 and a second movable frame 52 are arranged above the fixed plate 4, a fixed hoop 53 is arranged on the first movable frame 51 and the second movable frame 52, and a ray source for central transillumination pipeline girth welding is erected on the first movable frame 51 and the second movable frame 52 through the fixed hoop 53;
the first movable frame 51 and the second movable frame 52 both comprise a lower support frame and an upper support frame, the fixed part 53 is arranged on the upper support frame, that is, the first movable frame 51 comprises a first lower support frame 511 and a first upper support frame 512, the second movable frame 52 comprises a second lower support frame 521 and a second upper support frame 522, specifically, the lower support frame and the upper support frame both comprise two hollow square tubes, and the two square tubes of the upper support frame are sleeved on the outer sides of the two square tubes of the lower support frame and can move up and down on the two square tubes of the lower support frame;
the height adjusting structure comprises a fixing hole arranged on the lower support frame and a plurality of positioning holes arranged on the upper support frame along the height direction of the upper support frame, the fixing hole is a threaded hole, and a bolt penetrates through the positioning holes and is connected with the positioning holes. The first fixed hole corresponding to the first movable frame 51 is 513, and the first positioning hole is 514.
In this embodiment, the supporting column 14 passes through the fixing hole 44 and extends to above the fixing plate 4, and is located in two square tubes of the lower supporting frame, and moves up and down in the two square tubes.
The auxiliary frame 31 includes first link and second link 313, but first link is extending structure, specifically, first link includes first side's pipe 311 and second side's pipe 312, first side's pipe 311 one end with the connection can be dismantled to base body 1, first side's pipe 311's other end cover is established the second side's pipe 312 outside be provided with rectangular hole 314 on the first side's pipe 311, be provided with screw hole 315 on the second side's pipe 312, the bolt passes rectangular hole 314 with screw hole 315 is connected.
The other end of the second square pipe 312 is hinged to one end of the second connecting frame 313, and the other end of the second connecting frame 313 is connected to the auxiliary wheel 32.
The second square pipe 312 is provided with a fastening structure 33, the fastening structure 33 includes a sleeve 331 and a positioning block 332 fixedly connected to the sleeve 331, the second connecting frame 313 is provided with a kidney-shaped hole 316, the positioning block 332 is provided with a positioning hole 333, and a bolt can pass through the positioning hole 333 and the kidney-shaped hole 316 to fix the second connecting frame 313 and the positioning block 332.
Example 2:
the present embodiment 2 is different from embodiment 1 in that: the base comprises a base body 1, and is characterized in that a supporting seat 341, a sliding rail 342, a slider 343 and a connecting rod 344 are arranged at the bottom of the base body 1, the supporting seat 341 and the sliding rail 342 are both arranged at the bottom of the base body 1, the connecting rod 344 passes through a limiting hole arranged on the supporting seat 341 to be connected with the slider 343, and the connecting rod 344 can slide in the limiting hole, the slider 343 is matched with the sliding rail 342 to drive the connecting rod 344 connected with the slider 343 to move along the sliding rail 342, the traveling wheels 2 are connected with the connecting rod 344, and in order to adjust the position of the connecting rod 344 on the supporting plate 341 and the positions of the front and rear traveling wheels, scales are arranged on.
Example 3:
the present embodiment 3 is different from embodiment 1 in that: the bottom of the base body 1 is provided with a fixing plate 351 with a rectangular cavity, inner cavities at two sides of the fixing plate 351 are respectively connected with a left supporting plate 352 and a right supporting plate 353 which are in sliding fit, and the left supporting plate 352 and the right supporting plate 353 are respectively connected with the travelling wheels 2 at two sides of the base body 1. A left rack 354 is connected to the left support plate 352, a right rack 355 is connected to the right support plate 353, a gear 356 is disposed in the middle of the inner cavity of the fixing plate 351, and both the left rack 354 and the right rack 355 are engaged with the gear 356. A sliding groove and a driving device 357 are further provided at the bottom of the fixing plate 351, and the driving device 357 is connected to the left support plate 352 or the right support plate 353 through the sliding groove.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A ray source positioning device for a central transillumination pipeline circumferential weld is characterized by comprising a base body and a fixed seat, wherein the fixed seat is connected with the base body through a telescopic folding mechanism;
the fixing base is provided with a movable frame, a ray source for a central transillumination pipeline girth weld is erected on the movable frame, and the movable frame can at least lift or lower the position of the ray source for the central transillumination pipeline girth weld along the vertical direction, so that the ray source for the central transillumination pipeline girth weld aligns at the center of the workpiece.
2. The radiation source positioning device for the central transillumination pipeline circumferential weld according to claim 1, wherein the movable frame comprises a first movable frame and a second movable frame, a fixed part is arranged on each of the first movable frame and the second movable frame, and the radiation source for the central transillumination pipeline circumferential weld is erected on the first movable frame and the second movable frame through the fixed part;
the first movable frame and/or the second movable frame are/is provided with height adjusting structures, and the height adjusting structures can at least lower or raise the positions of the first movable frame and/or the second movable frame so as to enable a ray source for a central transillumination pipeline girth weld to be aligned to the center of a workpiece.
3. The radiation source positioning device for the central transillumination pipeline circumferential weld according to claim 2, wherein the first movable frame and the second movable frame each comprise a lower support frame and an upper support frame, the fixed portion is arranged on the upper support frame, and the upper support frame can be sleeved on the lower support frame and can move up and down along the lower support frame; the height adjusting structure comprises a fixing hole arranged on the lower supporting frame and a plurality of positioning holes arranged on the upper supporting frame along the height direction of the upper supporting frame, and bolts penetrate through the positioning holes and are connected with the fixing hole.
4. The radiation source positioning device for the central transillumination pipeline girth weld according to claim 1, wherein a guard plate is arranged at the periphery of the base body, a first sliding block, a second sliding block and a first sliding rod are arranged on the base body, the first sliding block is fixedly arranged on the base body, and the second sliding block is arranged on the first sliding rod; a third sliding block, a fourth sliding block and a second sliding rod are arranged on the fixed plate, and the third sliding block and the fourth sliding block are arranged on the second sliding rod; the telescopic folding mechanism comprises a folding lifting frame, and one end of the folding lifting frame is connected with the first sliding block and the second sliding block; the other end of the folding lifting frame is connected with the third sliding block and the fourth sliding block.
5. A radiation source positioning device according to claim 4, wherein the telescopic folding mechanism further comprises a support column fixed on the base body, and a fixing hole is provided on the fixing plate, and the support column passes through the fixing hole and extends to above the fixing plate.
6. The radiation source positioning device for the central transillumination pipeline circumferential weld according to any one of claims 1 to 5, characterized in that a walking wheel is further connected to the base body, and the base body can walk in the pipeline through the walking wheel; wherein,
the base body is connected with the travelling wheels through a size adjustable structure, and the distance between at least part of the travelling wheels in the horizontal direction or the vertical direction can be changed by changing the size of the size adjustable structure; and/or, the base body is a size-changeable mechanism, and the distance between the walking wheels can be adjusted by changing the size of the base body in the horizontal direction or the vertical direction.
7. The radiation source positioning device for the central transillumination pipeline circumferential weld according to claim 6, wherein the size adjustable structure comprises a fixing plate with a rectangular cavity, the inner cavities at two sides of the fixing plate are respectively connected with a left supporting plate and a right supporting plate which are in sliding fit, and the left supporting plate and the right supporting plate are respectively connected with the travelling wheels at two sides of the base body.
8. The radiation source positioning device for the central transillumination pipeline circumferential weld according to claim 7, wherein a left rack is connected to the left support plate, a right rack is connected to the right support plate, a gear is arranged in the middle of the inner cavity of the fixed plate, and both the left rack and the right rack are engaged with the gear.
9. The apparatus according to claim 6, wherein the base body has an auxiliary frame and an auxiliary wheel connected to two sides of the base body, the auxiliary frame comprises a first connecting frame and a second connecting frame, the first connecting frame is a telescopic structure, one end of the first connecting frame is hinged to one end of the second connecting frame, the other end of the first connecting frame is connected to the base body, and the other end of the second connecting frame is connected to the auxiliary wheel.
10. The radiation source positioning device for the central transillumination pipeline circumferential weld according to claim 9, wherein the auxiliary frame further comprises a fastening structure, the fastening structure comprises a sleeve and a positioning block fixedly connected with the sleeve, a kidney-shaped hole is formed in the second connecting frame, a positioning hole is formed in the positioning block, and a bolt can pass through the positioning hole and the kidney-shaped hole to fix the second connecting frame and the positioning block.
Priority Applications (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076775A (en) * | 2021-11-15 | 2022-02-22 | 国核示范电站有限责任公司 | Pipeline welding seam radiographic inspection geometric unsharpness control process |
| CN114199910A (en) * | 2021-12-14 | 2022-03-18 | 中核武汉核电运行技术股份有限公司 | Source locating device for radiographic inspection of impeller blades of reactor main coolant pump |
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2019
- 2019-09-06 CN CN201921488866.6U patent/CN210800447U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076775A (en) * | 2021-11-15 | 2022-02-22 | 国核示范电站有限责任公司 | Pipeline welding seam radiographic inspection geometric unsharpness control process |
| CN114076775B (en) * | 2021-11-15 | 2024-04-23 | 国核示范电站有限责任公司 | Pipeline weld joint ray detection geometric unclear control process |
| CN114199910A (en) * | 2021-12-14 | 2022-03-18 | 中核武汉核电运行技术股份有限公司 | Source locating device for radiographic inspection of impeller blades of reactor main coolant pump |
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