CN113075239A - Pipeline detection tool with heat insulation layer and detection method - Google Patents
Pipeline detection tool with heat insulation layer and detection method Download PDFInfo
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- CN113075239A CN113075239A CN202110295072.3A CN202110295072A CN113075239A CN 113075239 A CN113075239 A CN 113075239A CN 202110295072 A CN202110295072 A CN 202110295072A CN 113075239 A CN113075239 A CN 113075239A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/18—Investigating the presence of flaws defects or foreign matter
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- G01N2223/03—Investigating materials by wave or particle radiation by transmission
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- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
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- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/628—Specific applications or type of materials tubes, pipes
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The utility model relates to a pipeline detection tool with a heat preservation layer and a detection method, belonging to the technical field of pipeline detection, comprising an X-ray machine and an imaging plate, wherein a mounting ring is connected between the X-ray machine and the imaging plate, an opening is arranged on the mounting ring, and a locking piece is arranged on the opening; and a positioning mechanism is arranged between the imaging plate and the ray machine and is used for controlling the ray of the ray machine to be in a vertical state with the imaging plate. The mounting ring is sleeved on the pipeline wrapped with the heat insulation layer, and the opening of the mounting ring is locked through the locking piece, so that the mounting ring is reliably locked on the pipeline. The position between the ray machine and the imaging plate is adjusted and positioned by the positioning mechanism, so that the ray of the ray machine can pass through the pipeline and then is imaged on the imaging plate. The radiation detector is used for detecting the intensity of the transmitted rays, so that the defects in the object can be judged.
Description
Technical Field
The application relates to the technical field of pipeline detection, in particular to a pipeline detection tool with a heat preservation layer and a detection method.
Background
At present, an industrial pipeline is formed by welding a plurality of pipelines, and in order to ensure the welding quality, a connection welding opening between every two pipelines is detected.
In the related art, when an industrial pipeline, such as a steam pipeline or some liquid pipelines, is used, a thick insulating layer needs to be wrapped on the pipeline, and for safety, the pipeline needs to be periodically detected during the use period of the industrial pipeline. Generally, an imaging plate type X-ray pipeline detection technology is adopted, when a pipeline is detected, an imaging plate is firstly bound on the pipeline through a binding band, then a ray source penetrates through the pipeline, rays are vertically arranged on the imaging plate, when a ray bundle with uniform intensity irradiates an object, if defects or structure differences exist in a local area of the object, attenuation of the object to the rays is changed, so that the intensities of transmitted rays at different parts are different, and thus, the defects, material distribution and the like in the object can be judged by adopting a certain radiation detector to detect the intensities of the transmitted rays.
In view of the above-mentioned related technologies, the inventor believes that, when an imaging plate is used for imaging, the imaging plate needs to be in a state perpendicular to a radiation source, the imaging plate is bound on a pipeline through a binding band, the binding band is too tight, the imaging plate is easy to deform, the binding band is too loose, the connection between the imaging plate and the pipeline is unreliable, the imaging plate and the pipeline are easy to fall off, the radiation source and the imaging plate are all easy to be in a state of being difficult to be in a perpendicular state, and the defect of low detection precision exists.
Disclosure of Invention
In order to improve and fix the formation of image board through the bandage, be difficult to keep the vertically state between formation of image board and the ray source, lead to detecting the low problem of precision, this application provides a take heat preservation pipeline to detect frock and detection method.
First aspect, this application provides a take heat preservation pipeline digital ray detection frock, adopts following technical scheme:
a pipeline digital ray detection tool with a heat insulation layer comprises a ray machine and an imaging plate, wherein a mounting ring is connected between the ray machine and the imaging plate, an opening is formed in the mounting ring, and a locking piece is arranged on the opening;
and a positioning mechanism is arranged between the imaging plate and the ray machine and is used for controlling the ray of the ray machine to be in a vertical state with the imaging plate.
Through adopting above-mentioned technical scheme, open the retaining member above the collar, can open the opening of collar, then establish the collar cover on the pipeline that the parcel has the heat preservation, pin the opening of collar through the retaining member, make the reliable locking of collar on the pipeline. The position between the ray machine and the imaging plate is adjusted and positioned by the positioning mechanism, so that the ray of the ray machine can pass through the pipeline and then is imaged on the imaging plate. The ray bundle on the ray machine is perpendicular to the imaging plate, the ray bundle can be uniformly irradiated on the pipeline, when the ray bundle with uniform intensity irradiates an object, if a local area of the object has defects or a structure has difference, the attenuation of the object to the ray is changed, so that the transmission ray intensity of different parts is different, and the radiation detector is adopted to detect the transmission ray intensity, so that the defect inside the object can be judged. The detection precision is higher, if the ray bundle and the imaging plate are in an inclined state, the intensity of rays irradiated by the ray bundle is difficult to be uniform, and the detection precision is lower than the precision of the ray bundle on the ray machine which is measured in a mode that the ray bundle is vertical to the imaging plate.
Optionally, a protective shell is arranged on the imaging plate, the protective shell includes a top plate, a positioning frame and a bottom plate which are connected in sequence, the positioning frame is fixed on the periphery of the top plate, the bottom plate is arranged on one side of the positioning frame away from the top plate, and the bottom plate and the pipeline with the heat insulation layer are mutually attached;
the roof with be formed with installation space between the bottom plate, the formation of image board set up in the installation space, can dismantle the setting between roof and the location frame.
Through adopting above-mentioned technical scheme, the setting of protective housing can be convenient for protect the formation of image board, reduces the protection shield and causes the damage when detecting. When the imaging plate is installed, the top plate is detached from the positioning frame, the imaging plate is installed in the installation space, the bottom plate is fixed on the positioning frame, the protective shell provided with the imaging plate is installed on the pipeline, and the welding seam of the pipeline is measured.
Optionally, a placing plate is fixed on one side of the positioning frame, which is far away from the bottom plate, and the imaging plate and one side of the placing plate, which is far away from the bottom plate, are arranged in a fitting manner;
a plurality of locking columns are arranged on one surface, far away from the bottom plate, of the placing plate, a plurality of locking holes are formed in the imaging plate, and the locking columns are inserted into the locking holes in a one-to-one correspondence manner;
the side edge of the positioning frame, which is far away from the bottom plate, is movably provided with a locking plate, and the locking plate and the locking column are fixed through screws.
Through adopting above-mentioned technical scheme, when installing the bottom plate, at first open the locking plate, insert the locking hole above the formation of image board and locate on the locking post, then cover the locking plate on the roof to connect between roof and the locking post through the screw, can reliably fix the roof on the frame of fixing a position, thereby can reliably fix the formation of image board inside the protective housing.
Optionally, the positioning mechanism includes a plurality of connecting rods, the connecting rods are rotatably arranged on two opposite sides of the positioning frame in a one-to-one correspondence manner, a connecting hole is formed in the base of the ray machine, and one end of each connecting rod, which is far away from the positioning frame, is inserted into the corresponding connecting hole;
the connecting rod stretches out the one end of connecting hole and has seted up a plurality of waist type holes, the one end that the connecting rod stretches out the connecting hole is locked through the fitting pin, the fitting pin is inserted and is located in the waist type hole, be provided with a plurality of latch segments between the bottom of fitting pin and ray machine.
By adopting the technical scheme, after the mounting ring is fixed on the pipeline with the heat-insulating layer, the connecting rod is inserted into the connecting hole, and then the locking pin is inserted into the waist-shaped hole, so that the ray on the ray machine and the imaging plate are in a vertical state. When the diameter of the pipeline with the insulating layer is smaller, a locking block is inserted between the locking pin and the base of the ray machine, and the ray machine and the imaging plate are in a vertical state through the locking block.
Optionally, a first rolling body is arranged on one surface, facing the pipeline, of the positioning frame, a first mounting groove is formed in one surface, facing the pipeline, of the positioning frame, a mounting rod is arranged on the first rolling body, the mounting rod is slidably inserted into the first mounting groove, a pull rope is arranged at one end, far away from the first rolling body, of the mounting rod, a first spring is fixed at one end, far away from the first rolling body, of the mounting rod, and the pull rope penetrates through the first spring;
a second mounting groove is formed in one surface, facing the pipeline, of the positioning frame, one end of the second mounting groove is communicated with the first mounting groove, and one end, far away from the first mounting groove, of the second mounting groove extends to the position of the connecting rod;
the pull rope penetrates through the second mounting groove, one end, far away from the mounting rod, of the pull rope is fixed at a position, close to the positioning frame, of the connecting rod, and the distance between the pull rope and the positioning frame ranges from 8 cm to 10 cm.
Through adopting above-mentioned technical scheme, when the connecting rod was worn to locate inside the connecting hole, the stay cord will be elongated to can be with the direction pulling of installation pole towards keeping away from first rolling element, first rolling element will be towards the inside motion of location frame, thereby can with take the heat preservation pipeline to break away from the connection. When the connecting rod does not have and is connected with the ray production apparatus, first spring will be through the resilience force of self with first rolling element with take the contact between the heat preservation pipeline, when detecting pipeline different positions, need remove the collar, the collar can roll through between first rolling element and the pipeline outer wall when removing to in the detection.
Optionally, a diameter adjustable mechanism is arranged on the mounting ring, the diameter adjustable mechanism includes a plurality of telescopic unit bodies connected with each other, each telescopic unit body includes two movable rods and a rotating shaft, the two movable rods are crossed with each other, the rotating shaft is movably arranged at the crossing position of the two movable rods in a penetrating manner, and the two movable rods relatively or reversely rotate around the rotating shaft;
every two adjacent telescopic unit bodies rotate around the rotating shaft relatively or oppositely, and limiting assemblies are arranged on the telescopic unit bodies.
By adopting the technical scheme, the diameter of the mounting ring is adjusted according to the difference of the diameter of the pipeline with the heat preservation layer when the worker is practical. When installing the collar on taking heat preservation pipeline, the diameter of collar is in great state to the installation, after the installation was taken heat preservation pipeline, radially extrudeed whole collar to the diameter of change collar, after the lateral wall of collar and area heat preservation pipeline was pasted tightly, locked flexible cell cube through spacing subassembly, can injectd the diameter of collar, when taking the welding seam of heat preservation pipeline to measure, can be more stable.
Optionally, the limiting assembly comprises a plurality of pairs of limiting blocks and limiting rods, each pair of limiting blocks are fixed at the end parts of the two movable rods which are arranged in a crossed mode, a plurality of limiting holes are formed in each limiting rod, and each limiting hole is correspondingly sleeved on the two limiting blocks in the axial direction of the mounting ring.
Through adopting above-mentioned technical scheme, when the collar with take the laminating of heat preservation pipeline, gag lever post and stopper interconnect can be fixed the position spare of two interconnect's movable rod, can be with the reliable fixed of collar on taking the heat preservation pipeline.
Optionally, one end of the movable rod is provided with a first mounting hole, the other end of the movable rod is provided with a second mounting hole, the two mutually connected first mounting holes and the two mutually connected second mounting holes are coaxially arranged, and the rotating shaft is inserted between the first mounting hole and the second mounting hole;
the rotating shaft comprises a first rotating shaft and a second rotating shaft, the first rotating shaft is fixedly arranged in the first mounting hole in a penetrating manner, the second rotating shaft is fixedly arranged in the second mounting hole in a penetrating manner, and one surface, opposite to the first rotating shaft and the second rotating shaft, which are coaxially arranged are obliquely arranged;
the first rotating shaft is internally provided with a containing groove, one end of the second rotating shaft, facing the first rotating shaft, extends to form a fixed rod, the fixed rod is movably inserted into the first rotating shaft, and one end, far away from the first rotating shaft, of the fixed rod is embedded with a second rolling body;
a fixing plate is arranged in the first rotating shaft and at one end, far away from the second mounting hole, of the first mounting hole, the fixing plate is fixedly sleeved at one end, far away from the first rotating shaft, of the fixing rod, a second spring is inserted in the second rotating shaft and at the accommodating groove, one end of the second spring abuts against the bottom of the accommodating groove, the other end of the second spring abuts against the fixing plate, and the second spring is sleeved on the fixing rod;
when the angle between two adjacent movable rods is gradually increased, the second rolling body extends out from the accommodating groove in the direction away from the second rotating shaft;
when the angle between two adjacent movable rods is gradually decreased, the second rolling body retracts from the accommodating groove towards the direction close to the second rotating shaft.
By adopting the technical scheme, when the angle between two adjacent movable rods is gradually increased, the second rolling body extends out from the accommodating groove towards the direction far away from the second positioning block until the second rolling body is contacted with the pipeline, and the mounting ring can be loosened to move on the pipeline. On the contrary, when the mounting ring and the pipeline are held tightly relatively, the second rolling body is disconnected with the pipeline, so that the gap between the pipeline and the mounting ring is reduced, and the mounting ring and the pipeline are mounted more tightly.
In a second aspect, the application provides a digital ray detection method for a pipeline with a heat-insulating layer, which adopts the following technical scheme:
a digital ray detection method for a pipeline with a heat-insulating layer comprises the following detection steps:
s1: inserting the mounting ring fixed with the ray machine and the imaging plate on a pipeline with a heat-insulating layer from the position of the opening of the mounting ring, and locking the opening of the mounting ring through the locking piece;
s2: the mounting ring is compressed along the radial direction of the mounting ring, when the mounting ring and the pipeline with the heat insulation layer are attached to each other, the positions of two adjacent limiting blocks on the movable rod are limited through the limiting rods, and the diameter of the mounting ring is limited;
s3: inserting the connecting rod into the connecting hole to enable a ray source emitted by the ray machine to be perpendicular to the imaging plate, and then detecting the welding line of the pipeline with the insulating layer;
s4: after one position is detected, the limiting rod is detached, the diameter of the mounting ring is increased, the mounting ring rotates in the circumferential direction or moves in the axial direction of the pipeline with the heat-insulating layer, after the determined position is reached, the welding seams of the pipeline with the heat-insulating layer are detected by repeating the steps of S2 and S3, and multiple positions of the pipeline with the heat-insulating layer are detected, so that the detection precision is ensured.
By adopting the technical scheme, the detection precision of the pipeline can be improved on the premise of not removing the heat preservation layer, and the detection is convenient and fast.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the setting of collar and positioning mechanism, on the ray bundle perpendicular to imaging plate on the ray machine, can be even shine the ray bundle on the pipeline, when the even ray bundle of intensity shines the object, if there is defect or structure difference in object local area, it will change the decay of object to the ray for different positions transmission ray intensity is different, and like this, adopt radiation detector to detect transmission ray intensity, just can judge the inside defect of object, with the improvement detection precision.
2. Through the arrangement of the waist-shaped hole and the locking block, the distance between the imaging plate and the ray source of the ray machine can be adjusted to adapt to pipelines with different diameters so as to facilitate detection;
3. through the setting of first rolling element and second rolling element, can play the installation ring of being convenient for rotate to realize the effect that detects many places of pipeline.
Drawings
FIG. 1 is a schematic structural diagram of a digital ray detection tool mounted on a pipeline with an insulating layer in the embodiment of the application;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic view of the overall structure of a digital ray detection tool in an embodiment of the present application;
FIG. 4 is an enlarged schematic view of the portion B of FIG. 3;
FIG. 5 is an enlarged schematic view of the portion C of FIG. 3;
FIG. 6 is an enlarged schematic view of a portion D of FIG. 3;
FIG. 7 is a schematic view of a connection structure for embodying the first rolling elements in the embodiment of the present application;
fig. 8 is an enlarged schematic view of a portion E in fig. 7.
Description of reference numerals: 1. an ray machine;
2. an imaging plate; 21. a protective shell; 211. a top plate; 212. positioning the frame; 2121. a first rolling element; 2122. a first mounting groove; 2123. mounting a rod; 2124. pulling a rope; 2125. a first spring; 2126. a second mounting groove; 213. a base plate; 214. an installation space; 215. placing the plate; 216. a locking post; 217. a locking hole; 218. a locking plate;
3. a mounting ring; 31. an opening; 32. a locking member; 321. mounting blocks;
4. a diameter adjustable mechanism; 41. a telescopic unit body; 411. a rotating shaft; 4111. a first rotating shaft; 4112. a second rotating shaft; 4113. accommodating grooves; 4114. fixing the rod; 4115. a second rolling element; 4116. a fixing plate; 4117. a second spring; 412. a movable rod; 4121. a first mounting hole; 4122. a second mounting hole; 42. a limiting component; 421. a limiting block; 422. a limiting rod; 423. a limiting hole;
5. a positioning mechanism; 51. a connecting rod; 52. connecting holes; 53. a locking pin; 54. a kidney-shaped hole; 55. a locking block;
6. and the pipeline is provided with an insulating layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The embodiment of the application discloses take heat preservation pipeline digital ray to detect frock. Referring to fig. 1, a pipeline detection tool with a heat-insulating layer and a detection method thereof comprise an installation ring 3, and an X-ray machine 1 and an imaging plate 2 which are arranged at two ends of the installation ring 3 in the diameter direction, wherein when the pipeline 6 with the heat-insulating layer is detected by digital rays, the installation ring 3 is fixed on the X-ray machine 1 and the imaging plate 2, so that a vertical state is formed between a ray source on the X-ray machine 1 and the imaging plate 2, and the detection precision is improved.
Referring to fig. 2, an opening 31 is provided on the mounting ring 3, and when the weld on the pipe 6 with the insulating layer is detected, the mounting ring 3 is sleeved on the pipe 6 with the insulating layer through the opening 31. The opening 31 of the mounting ring 3 is provided with a locking member 32, the locking member 32 is a bolt, the two sides of the opening 31 of the mounting ring 3 are respectively fixed with a mounting block 321, the bolt is arranged on the mounting blocks 321 on the two sides of the opening 31 of the mounting ring 3 in a penetrating manner, and the opening 31 of the mounting ring 3 can be locked through the bolt.
Referring to fig. 2, the diameter adjustable mechanism 4 is arranged on the mounting ring 3, the diameter of the pipeline to be detected is different in practical application, and the thickness of the heat-insulating layer wrapped on the pipeline is also different, so that the diameter of the mounting ring 3 can be controlled by the diameter adjustable mechanism 4 to adapt to pipelines 6 with heat-insulating layers and different diameters. The diameter adjustable mechanism 4 includes a plurality of telescopic unit bodies 41 connected to each other, each telescopic unit body 41 includes two movable rods 412 and a plurality of rotating shafts 411, and in this embodiment, the movable rods 412 and the rotating shafts 411 are illustrated as a single telescopic unit body 41. The two movable rods 412 are crossed with each other, the rotating shaft 411 is movably inserted into the crossing position of the two movable rods 412, the two crossed movable rods 412 rotate relatively or reversely around the rotating shaft 411, the rotating shaft 411 is inserted between every two adjacent telescopic unit bodies 41, and nuts are respectively arranged at two ends of each rotating shaft 411, so that the two adjacent movable rods 412 are difficult to be disconnected.
Referring to fig. 2, since each two adjacent telescopic unit bodies 41 are rotatably connected by a rotating shaft 411, in the case of a certain pipe diameter, in order to facilitate the definition of the diameter of the mounting ring 3, a limiting assembly 42 is provided on each telescopic unit body 41. The limiting assembly 42 comprises a plurality of pairs of limiting blocks 421 and limiting rods 422, each pair of limiting blocks 421 is fixed at the ends of the two movable rods 412 which are arranged in a crossed manner in a one-to-one correspondence manner, and a connecting line between the two limiting blocks 421 is parallel to the axis of the mounting ring 3. A plurality of limiting holes 423 are formed in the limiting rod 422, and two of the limiting holes 423 in each limiting rod 422 are correspondingly sleeved on two axial limiting blocks 421 of the mounting ring 3 one by one. That is, when the diameter that collar 3 adjusted is great, the distance between two stopper 421 is shorter, select suitable two spacing holes 423 cover establish on above-mentioned two stopper 421 can to can adapt to the stopper 421 of different distances through a plurality of spacing holes 423.
Referring to fig. 3 and 4, when the weld on the pipeline 6 with the insulating layer is detected, a plurality of positions of the weld need to be detected, that is, the positions of the ray machine 1 and the imaging plate 2 on the pipeline 6 with the insulating layer can be changed by rotating the mounting ring 3, and the welds at different positions can be detected. When the mounting ring 3 rotates, in order to facilitate the rotation between the mounting ring 3 and the pipe 6 with the insulating layer, a second rolling element 4115 is arranged between every two adjacent telescopic unit bodies 41.
Referring to fig. 4, a first mounting hole 4121 is formed at one end of each movable bar 412, a second mounting hole 4122 is formed at the other end of each movable bar 412, the first mounting hole 4121 and the second mounting hole 4122 of the two adjacent telescopic unit bodies 41 connected to each other are coaxially disposed, and the rotating shaft 411 is interposed between the first mounting hole 4121 and the second mounting hole 4122. The rotating shaft 411 includes a first rotating shaft 4111 and a second rotating shaft 4112, the first rotating shaft 4111 is fixedly arranged in a first mounting hole 4121 in a penetrating manner, the second rotating shaft 4112 is fixedly arranged in a second mounting hole 4122 in a penetrating manner, a first rotating shaft 4111 and a second rotating shaft 4112 which are coaxially arranged are arranged in an inclined manner, and the first rotating shaft 4111 and the second rotating shaft 4112 which are coaxially arranged are in opposite contact with each other.
Referring to fig. 4, holding groove 4113 has been seted up inside first pivot 4111, and second pivot 4112 has dead lever 4114 towards the one end extension of first pivot 4111, and dead lever 4114 rotates and inserts the inside of locating first pivot 4111, and second rolling element 4115 inlays the one end of locating dead lever 4114 and keeping away from first pivot 4111, and in this embodiment, second rolling element 4115 is the ball. The second spring 4117 is inserted into the accommodating groove 4113 and inside the second shaft 4112, one end of the second spring 4117 abuts against the bottom of the accommodating groove 4113, and the fixing rod 4114 is sleeved with the second spring 4117. Fixing plate 4116 is welded to one end, close to second rolling element 4115, of fixing rod 4114, and is used for limiting second spring 4117, and when second spring 4117 is installed, second spring 4117 is welded to fixing plate 4116 after being sleeved on fixing rod 4114. When the diameter of the mounting ring 3 is increased, the included angle between two adjacent movable rods 412 becomes larger, that is, the two adjacent movable rods 412 move in opposite directions, when the angle between two adjacent movable rods 412 gradually increases, due to the inclined plane of the opposite surface of the first rotating shaft 4111 and the second rotating shaft 4112, the second rolling body 4115 extends out from the accommodating groove 4113 towards the direction away from the second rotating shaft 4112, and then contacts with the pipeline, when the mounting ring 3 is moved, the resistance between the mounting ring 3 and the pipeline can be reduced through the connection between the second rolling body 4115 and the pipeline, when the angle between two adjacent movable rods 412 gradually decreases, the second rolling body 4115 retracts from the accommodating groove 4113 towards the direction close to the second rotating shaft 4112.
Referring to fig. 5, the base of the ray machine 1 is fixed to the mounting ring 3, and the ray sum of the ray source of the ray machine 1 is perpendicular to the tangent of the mounting ring 3. A protective case 21 is provided on the imaging plate 2, the protective case 21 includes a top plate 211 and a bottom plate 213 that are arranged in parallel to each other, and a positioning bezel 212 fixed to the peripheries of the top plate 211 and the bottom plate 213, an installation space 214 is formed between the top plate 211 and the bottom plate 213, the imaging plate 2 is provided in the installation space 214, and the imaging plate 2 and the bottom plate 213 are arranged in parallel to each other. Roof 211 and location frame 212 adopt the aluminum alloy material, and bottom plate 213 adopts the carbon fiber board, and bottom plate 213 sets up with taking the laminating of heat preservation pipeline 6 each other to bottom plate 213 is perpendicular with the ray on the ray apparatus 1, can be convenient for radiographic imaging on imaging plate 2. Ray machine 1 is even shines bundle of rays on taking heat preservation pipeline 6 to when the even bundle of rays of intensity shines takes heat preservation pipeline 6, if there is the defect or the structure difference in taking heat preservation pipeline 6 local area, it will change and takes heat preservation pipeline 6 to the decay of ray, makes different positions transmission ray intensity different, like this, adopts radiation detector to detect transmission ray intensity, just can judge the defect of the welding seam of taking heat preservation pipeline 6.
Referring to fig. 5, in order to facilitate the detachment of the imaging plate 2 from the inside of the protective case 21, a bottom plate 213 and a positioning bezel 212 are detachably provided therebetween. A locking plate 218 is hinged to one side of the positioning frame 212 far away from the bottom plate 213, a placing plate 215 is fixed to one side of the inner wall of the positioning frame 212 far away from the bottom plate 213, a plurality of locking columns 216 are arranged on one side of the placing plate 215 far away from the bottom plate 213, and a plurality of locking holes 217 are formed in the imaging plate 2. Imaging plate 2 and the one side laminating setting of placing board 215 and keeping away from bottom plate 213 make a plurality of locking post 216 one-to-one insert locate a plurality of locking hole 217 in, then contact roof 211 and imaging plate 2, fix between roof 211 locking post 216 through the screw at last. When the imaging plate 2 needs to be disassembled, the screws are disassembled, and then the top plate 211 is disassembled, so that the imaging plate 2 can be taken out.
Referring to fig. 3, a positioning mechanism 5 is disposed between the imaging plate 2 and the radiographic machine 1, the positioning mechanism 5 includes a plurality of connecting rods 51, the connecting rods 51 are rotatably disposed on two opposite sides of the positioning frame 212 in a one-to-one correspondence manner, and in order to prevent interference between the connecting rods 51 and the pipeline, the connecting rods 51 are disposed on two axial sides of the pipeline. A connecting hole 52 is formed in the base of the ray machine 1, and in this embodiment, the connecting hole 52 is a long hole, so that one end of the connecting rod 51, which is far away from the positioning frame 212, is inserted into the connecting hole 52.
Referring to fig. 6, a plurality of kidney-shaped holes 54 are formed in one end, extending out of the connecting hole 52, of the connecting rod 51, a locking pin 53 is inserted into the kidney-shaped hole 54 in the end, extending out of the connecting hole 52, of the connecting rod 51, due to the fact that the kidney-shaped hole 54 is formed, in order to enable connection to be firmer, a plurality of locking blocks 55 are arranged between the locking pin 53 and the bottom of the ray machine 1, the locking blocks 55 are arranged to be U-shaped, the locking blocks 55 can be directly clamped in the connecting rod 51, and then limiting is conducted through the locking pin 53 and the base of the.
Referring to fig. 7 and 8, a first rolling body 2121, in this embodiment, a ball is also provided as the first rolling body 2121, on a surface of the positioning frame 212 facing the pipe, which is close to the mounting ring 3. The first rolling body 2121 is provided with a mounting rod 2123, i.e. the first rolling body 2121 is embedded in an end of the mounting rod 2123 facing the pipe. A pull rope 2124 is provided at an end of the mounting rod 2123 away from the first rolling element 2121, and an end of the pull rope 2124 away from the mounting rod 2123 is fixed to the connecting rod 51 near the positioning frame 212. A first mounting groove 2122 is formed in one surface of the positioning frame 212 facing the pipe 6 with the insulating layer, the mounting rod 2123 is slidably inserted into the first mounting groove 2122, a first spring 2125 is fixed to one end of the mounting rod 2123 away from the first rolling element 2121, the pull rope 2124 is inserted into the first spring 2125, one end of the first spring 2125 abuts against the bottom of the first mounting groove 2122, and the other end of the first spring 2125 abuts against one end of the mounting rod 2123 away from the first rolling element 2121. A second mounting groove 2126 is formed in one surface of the positioning frame 212 facing the pipeline, one end of the second mounting groove 2126 is communicated with the first mounting groove 2122, the other end of the second mounting groove 2126 extends to the position of the connecting rod 51, and the pull rope 2124 penetrates through the second mounting groove 2126.
Referring to fig. 7 and 8, in order to facilitate the movement of the connecting rod 51, the distance between the pulling rope 2124 and the positioning frame 212 is 8 cm to 10 cm, and in this embodiment, the distance between one end of the pulling rope 2124 close to the connecting rod 51 and the positioning frame 212 is 8 cm. When the angle between the connecting rod 51 and the positioning frame 212 gradually increases, the pulling rope 2124 is pulled, the first spring 2125 is compressed, and the first rolling element 2121 is disconnected from the pipe, so as to facilitate the reliable fixing between the mounting ring 3 and the pipe 6 with the insulating layer. When the angle between the connecting rod 51 and the positioning frame 212 is gradually decreased, the first spring 2125 will return by its resilience, and can also apply a pulling force to the connecting rod 51, so that the connecting rod 51 is placed on the positioning frame 212.
The implementation principle of the digital radiographic inspection tool for the pipeline with the heat preservation layer in the embodiment of the application is as follows: firstly, the mounting ring 3 is sleeved on the pipeline, and the diameter of the mounting ring 3 is limited by the limiting rod 422. Secondly, the connecting rod 51 is inserted into the connecting hole 52, and the position between the imaging plate 2 and the ray machine 1 is fixed through the connecting rod 51, so that the detection of the welding seam on the pipeline is facilitated. Finally, the diameter of the mounting ring 3 is enlarged, the imaging plate 2 and the ray machine 1 are driven to move through the mounting ring 3, then the diameter of the mounting ring 3 is limited, the imaging plate 2 and the ray machine 1 are fixed, and other positions of a welding seam on a pipeline are detected. When detecting, ray bundle on the ray machine 1 is perpendicular to the imaging plate 2, can be even shine the ray bundle on the pipeline, when the even ray bundle of intensity shines and takes heat preservation pipeline 6, if take 6 local areas of heat preservation pipeline to have defect or structure to have the difference, it will change the decay of object to the ray for different positions transmission ray intensity is different, like this, adopts radiation detector to detect transmission ray intensity, just can judge and take the inside defect of heat preservation pipeline 6. And multiple detections are carried out for multiple times to ensure that the welding seam of the pipeline 6 with the heat-insulating layer is in a normal state.
The embodiment of the application also discloses a digital ray detection method for the pipeline with the heat-insulating layer. A digital ray detection method for a pipeline with an insulating layer comprises the following detection steps:
s1: the mounting ring 3 with the ray machine 1 and the imaging plate 2 fixed thereon is inserted on the pipeline 6 with the insulating layer from the position of the opening 31, and the opening 31 of the mounting ring 3 is locked by the locking piece 32.
S2: the mounting ring 3 is compressed along the radial direction of the mounting ring 3 to change the diameter of the mounting ring 3, when the mounting ring 3 and the pipeline 6 with the heat insulation layer are attached to each other, the positions of two limit blocks 421 between adjacent positions on the movable rod 412 are limited through the limit rod 422, and therefore the diameter of the mounting ring 3 is locked. When the mounting ring 3 is compressed, the angle between two adjacent movable rods 412 is gradually decreased, the angle between the first rotating shaft 4111 and the second rotating shaft 4112 is gradually decreased, the second rolling body 4115 is retracted from the accommodating groove 4113 toward the direction close to the second rotating shaft 4112, and the second rolling body 4115 is disconnected from the pipe 6 with the heat-insulating layer, so that the mounting ring 3 and the pipe 6 with the heat-insulating layer are attached to each other tightly.
S3: by inserting the connecting rod 51 into the connecting hole 52, the pulling rope 2124 is extended, so that the mounting rod 2123 can be pulled away from the first rolling element 2121, and the first rolling element 2121 moves toward the inside of the positioning frame 212, so that the pipe can be disconnected. After the connecting rod 51 is fixed in the connecting hole 52 through the locking pin 53, the ray source emitted by the ray machine 1 and the imaging plate 2 can be perpendicular to each other, and then the detection of the welding seam of the pipeline 6 with the insulating layer can be started. And finally, detecting the intensity of the transmitted rays by using a radiation detector, so that the defects in the object can be judged.
S4: after detecting a position, the limiting rod 422 is detached, the diameter of the mounting ring 3 is increased, the mounting ring 3 rotates in the circumferential direction or moves in the axial direction of the pipeline 6 with the insulating layer, and after reaching the determined position, the welding seam of the pipeline 6 with the insulating layer is detected by repeating the steps of S2 and S3. And (4) detecting the pipelines 6 with the insulating layers at multiple positions to ensure the detection precision.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a take heat preservation pipeline to detect frock, includes ray machine (1) and formation of image board (2), its characterized in that: an installation ring (3) is connected between the ray machine (1) and the imaging plate (2), an opening (31) is formed in the installation ring (3), and a locking piece (32) is arranged on the opening (31);
a positioning mechanism (5) is arranged between the imaging plate (2) and the ray machine (1), and the positioning mechanism (5) is used for controlling the vertical state between the ray of the ray machine (1) and the imaging plate (2).
2. The utility model provides a take heat preservation pipeline to detect frock according to claim 1, its characterized in that: the imaging plate (2) is provided with a protective shell (21), the protective shell (21) comprises a top plate (211), a positioning frame (212) and a bottom plate (213) which are sequentially connected, the positioning frame (212) is fixed on the periphery of the top plate (211), the bottom plate (213) is arranged on one side, away from the top plate (211), of the positioning frame (212), and the bottom plate (213) and a pipeline with a heat-insulating layer are mutually attached;
an installation space (214) is formed between the top plate (211) and the bottom plate (213), the imaging plate (2) is arranged in the installation space (214), and the top plate (211) and the positioning frame (212) are detachably arranged.
3. The utility model provides a take heat preservation layer pipeline to detect frock according to claim 2, its characterized in that: a placing plate (215) is fixed on one side, away from the bottom plate (213), of the positioning frame (212), and the imaging plate (2) is attached to one surface, away from the bottom plate (213), of the placing plate (215);
a plurality of locking columns (216) are arranged on one surface, far away from the bottom plate (213), of the placing plate (215), a plurality of locking holes (217) are formed in the imaging plate (2), and the locking columns (216) are inserted into the locking holes (217) in a one-to-one correspondence manner;
one side edge of the positioning frame (212) far away from the bottom plate (213) is movably provided with a locking plate (218), and the locking plate (218) and the locking column (216) are fixed through screws.
4. The utility model provides a take heat preservation layer pipeline to detect frock according to claim 2, its characterized in that: the positioning mechanism (5) comprises a plurality of connecting rods (51), the connecting rods (51) are correspondingly arranged on two opposite sides of the positioning frame (212) in a one-to-one rotating mode, a connecting hole (52) is formed in the base of the ray machine (1), and one end, far away from the positioning frame (212), of each connecting rod (51) is inserted into the corresponding connecting hole (52);
a plurality of waist type holes (54) have been seted up to the one end that connecting rod (51) stretched out connecting hole (52), the one end that connecting rod (51) stretched out connecting hole (52) is locked through check lock (53), check lock (53) are inserted and are located in waist type hole (54), be provided with a plurality of latch segments (55) between the bottom of check lock (53) and ray machine (1).
5. The utility model provides a take heat preservation pipeline to detect frock according to claim 4, its characterized in that: a first rolling body (2121) is arranged on one surface, facing the pipeline (6) with the heat insulation layer, of the positioning frame (212), a first mounting groove (2122) is formed in one surface, facing the pipeline (6) with the heat insulation layer, of the positioning frame (212), a mounting rod (2123) is arranged on the first rolling body (2121), the mounting rod (2123) is inserted into the first mounting groove (2122) in a sliding mode, a pull rope (2124) is arranged at one end, far away from the first rolling body (2121), of the mounting rod (2123), a first spring (2125) is fixed at one end, far away from the first rolling body (2121), of the mounting rod (2123), and the pull rope (2124) penetrates through the first spring (2125);
one surface, facing the pipeline, of the positioning frame (212) is provided with a second mounting groove (2126), one end of the second mounting groove (2126) is communicated with the first mounting groove (2122), and one end, far away from the first mounting groove (2122), of the second mounting groove (2126) extends to the position of the connecting rod (51);
the pull rope (2124) penetrates through the second mounting groove (2126), one end, far away from the mounting rod (2123), of the pull rope (2124) is fixed to the position, close to the positioning frame (212), of the connecting rod (51), and the distance between the pull rope (2124) and the positioning frame (212) is 8 cm-10 cm.
6. The utility model provides a take heat preservation pipeline to detect frock according to claim 3, its characterized in that: the diameter adjustable mechanism (4) is arranged on the mounting ring (3), the diameter adjustable mechanism (4) comprises a plurality of telescopic unit bodies (41) which are connected with each other, each telescopic unit body (41) comprises two movable rods (412) and a rotating shaft (411), the two movable rods (412) are mutually crossed, the rotating shaft (411) is movably arranged at the crossed position of the two movable rods (412) in a penetrating mode, and the two movable rods (412) relatively or reversely rotate around the rotating shaft (411);
every two adjacent telescopic unit bodies (41) rotate oppositely or oppositely around the rotating shaft (411), and a limiting assembly (42) is arranged on each telescopic unit body (41).
7. The utility model provides a take heat preservation pipeline to detect frock according to claim 6, its characterized in that: the limiting assembly (42) comprises a plurality of pairs of limiting blocks (421) and limiting rods (422), each pair of limiting blocks (421) are fixed at the ends of two movable rods (412) which are arranged in a cross mode, a plurality of limiting holes (423) are formed in each limiting rod (422), and each limiting hole (423) is correspondingly sleeved on the two axial limiting blocks (421) of the mounting ring (3) one by one.
8. The utility model provides a take heat preservation pipeline to detect frock according to claim 6, its characterized in that: one end of the movable rod (412) is provided with a first mounting hole (4121), the other end of the movable rod (412) is provided with a second mounting hole (4122), the two mutually connected first mounting holes (4121) and second mounting holes (4122) are coaxially arranged, and the rotating shaft (411) is inserted between the first mounting hole (4121) and the second mounting hole (4122);
the rotating shaft (411) comprises a first rotating shaft (4111) and a second rotating shaft (4112), the first rotating shaft (4111) is fixedly arranged in a first mounting hole (4121) in a penetrating manner, the second rotating shaft (4112) is fixedly arranged in a second mounting hole (4122) in a penetrating manner, and one surface, opposite to the first rotating shaft (4111) and the second rotating shaft (4112), which are coaxially arranged is obliquely arranged;
an accommodating groove (4113) is formed in the first rotating shaft (4111), a fixing rod (4114) extends from one end, facing the first rotating shaft (4111), of the second rotating shaft (4112), the fixing rod (4114) is movably inserted into the first rotating shaft (4111), and a second rolling element (4115) is embedded in one end, far away from the first rotating shaft (4111), of the fixing rod (4114);
the utility model discloses a fixing device for a motor vehicle, including first pivot (4111), second pivot (4111), fixing plate (4116), fixed cover, fixing rod (4114), second pivot (4111), second pivot (4112), second spring (4117), holding groove (4113), fixing plate (4116), second spring (4117), fixing rod (4114), fixing plate (4114), and second pivot (4122), wherein the first pivot (4111) is located in the first pivot (4111), the one end of second spring (4117) is supported with the bottom of holding groove (4113), the other end of second spring (4117) is supported with fixing plate (4116), and fixing rod (4114) is sleeved with second spring (4117);
when the angle between two adjacent movable rods (412) is gradually increased, the second rolling body (4115) extends out of the accommodating groove (4113) in a direction away from the second rotating shaft (4112);
when the angle between two adjacent movable rods (412) is gradually decreased, the second rolling body (4115) retracts from the accommodating groove (4113) towards the direction close to the second rotating shaft (4112).
9. A detection method for a pipeline with a heat-insulating layer is characterized by comprising the following steps: the detection tool with the heat-insulating layer for the pipeline comprises any one of claims 1 to 8, and comprises the following detection steps:
s1: inserting a mounting ring (3) fixed with a ray machine (1) and an imaging plate (2) on a pipeline (6) with a heat-insulating layer from the position of an opening (31) of the mounting ring (3), and locking the opening (31) of the mounting ring (3) through a locking piece (32);
s2: the mounting ring (3) is compressed along the radial direction of the mounting ring (3), when the mounting ring (3) and the pipeline (6) with the heat-insulating layer are attached to each other, the positions of two adjacent limiting blocks (421) on the movable rod (412) are limited through the limiting rods (422), and the diameter of the mounting ring (3) is limited;
s3: the connecting rod (51) is inserted into the connecting hole (52), so that a ray source emitted by the ray machine (1) and the imaging plate (2) can be perpendicular to each other, and detection can be carried out on a welding line with the insulating layer pipeline (6);
s4: after one position is detected, the limiting rod (422) is detached, the diameter of the mounting ring (3) is increased, the mounting ring (3) rotates in the circumferential direction or moves in the axial direction of the pipeline (6) with the heat-insulating layer, after the determined position is reached, the welding seams of the pipeline (6) with the heat-insulating layer are detected by repeating the steps of S2 and S3, and multiple positions of the pipeline (6) with the heat-insulating layer are detected, so that the detection precision is ensured.
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| CN113075239B (en) | 2021-12-28 |
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