CN109100376B - Automatic scanner for DR radiography of pipeline - Google Patents
Automatic scanner for DR radiography of pipeline Download PDFInfo
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- CN109100376B CN109100376B CN201811194540.2A CN201811194540A CN109100376B CN 109100376 B CN109100376 B CN 109100376B CN 201811194540 A CN201811194540 A CN 201811194540A CN 109100376 B CN109100376 B CN 109100376B
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- 238000002601 radiography Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000004065 semiconductor Substances 0.000 claims description 13
- 238000003384 imaging method Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 11
- 239000002699 waste material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
- G01N23/04—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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/03—Investigating materials by wave or particle radiation by transmission
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/30—Accessories, mechanical or electrical features
- G01N2223/31—Accessories, mechanical or electrical features temperature control
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention provides an automatic scanner for DR radiography of a pipeline, a digital detector bracket is fixed on a spring bracket through a screw, a supporting wheel is arranged at the lower part of the digital detector, the supporting wheel is fixed on the digital detector bracket through a screw, a motor is fixed on a main frame of the scanner through a screw, the spring bracket is fixed on the main frame of the scanner through a screw, a battery box is fixed on the main frame of the scanner through a screw, and a control box is fixed on the main frame of the scanner through a screw; the lower end of the main frame of the scanner is connected with a rack rail and a C-shaped arm, a tooth block and a spring support leg are arranged on the rack rail, the rack rail is connected with a ray machine chassis on the ray machine, a quick-release pin shaft is arranged on the ray machine chassis, and a driving gear is meshed with the tooth block on the rack rail; the temperature control system is arranged on the digital detector, so that the temperature of the digital detector is always maintained at 23+/-5 ℃, the digital detector can be applied to pipelines with different diameters, and the digital detector has an integrated structure and small volume and is convenient for field operation.
Description
Technical Field
The invention relates to the field of central exposure DR (digital radiography) ray detection of long-distance pipelines, in particular to an automatic scanner for DR radiography of a pipeline.
Background
In the nondestructive testing of butt-joint girth welds of long oil and gas pipelines, the X-ray detection is still mainly carried out by common film detection, and the film shooting has several problems:
first, the field cannot see the image. Causing many disqualified negatives to appear due to environmental and personnel operations, requiring retake;
and (II) the film-developing condition is strict, and a special film-developing chamber is required to be equipped. And waste liquid is generated in the film developing process;
(III) the storage requirement of the film is strict;
fourthly, with the arrival of the digital age and the establishment of a network platform, the film needs to be scanned and uploaded, so that the waste of personnel and time is caused;
and (V) the existing scanner needs to be externally connected with a long control cable to provide power and control signals for the scanner, so that the operation is very inconvenient, and the existing scanner adopts wireless control and wireless data transmission, but still needs a large power box to transmit power through the cable, and a large power box needs to be carried during on-site detection, so that the labor intensity of personnel is high.
Disclosure of Invention
In order to solve the problems, the invention provides an automatic scanner for DR radiography of a pipeline, which is characterized in that DR detection is applied to pipeline detection, a track is arranged beside a butt joint circular weld of the pipeline, an integrated scanner is arranged on the track, a computer controls the scanner through a WIFI wireless network, the scanner is provided with a power supply and a motion control circuit and a computer system, and is provided with a digital detector, so that the resolution of an image is optimal, the circumference of the pipeline is divided into a plurality of sections, a static single-piece segmented shooting mode is adopted, the acquired data is immediately transmitted back to the computer through the network and stored as digital data after shooting is finished, and the acquired data can be directly uploaded to a data platform to realize the requirements of digital storage and analysis.
The technical scheme of the invention is as follows: the automatic scanner for the pipeline DR radiography comprises a control box, a spring support, a digital detector, a supporting wheel, a motor, a battery box and a scanner main frame, wherein the digital detector support is fixed on the spring support through a screw, the supporting wheel is arranged at the lower part of the digital detector, the supporting wheel is fixed on the digital detector support through a screw, the motor is fixed on the scanner main frame through a screw, the spring support is fixed on the scanner main frame through a screw, the battery box is fixed on the scanner main frame through a screw, and the control box is fixed on the scanner main frame through a screw;
the lower end of the main frame of the scanner is connected with a rack rail and a C-shaped arm, a tooth block and a spring support leg are arranged on the rack rail, the rack rail is connected with a ray machine chassis on the ray machine, a quick-release pin shaft is arranged on the ray machine chassis, and a driving gear is meshed with the tooth block on the rack rail;
the temperature control system is arranged on the digital detector, so that the temperature of the digital detector is always maintained at 23+/-5 ℃, the temperature control system adopts a temperature control circuit with a temperature sensor, the temperature control system comprises the temperature sensor, a heating device and a semiconductor refrigerating device, the temperature sensor is respectively connected with the heating device and the semiconductor refrigerating device, the temperature sensor can detect the working temperature of equipment in real time, and when the working temperature of the digital detector is lower than the stable working temperature, namely, the temperature is lower than 18 ℃, the heating device is automatically started, and the digital detector is heated and preheated integrally; when the temperature of the digital detector is higher than the stable working temperature, namely the temperature is higher than 28 ℃, the semiconductor refrigerating device starts to work, the temperature of the digital detector is reduced to the stable working temperature, and the temperature control system adopts a temperature control circuit with a temperature sensor.
Preferably, the control box comprises a motor controller, a filter plate and a control box shell, wherein the motor controller and the filter plate are fixed on the control box shell through screws, and the control box shell is fixed on the main frame of the scanner through screws.
Preferably, the spring bracket comprises an adjusting hand wheel, a spring and a linear bearing assembly, the height of the linear bearing assembly can be adjusted by rotating the adjusting hand wheel, so that the distance between the digital detector bracket and the detection workpiece is adjusted, and the spring compresses the supporting wheel and the workpiece to ensure the focal length.
Preferably, the battery box comprises a positioning device, an antenna, a singlechip, a WIFI control card, a battery box shell and a battery pack, wherein the positioning device is fixed on the battery box shell and connected with the singlechip, the antenna, the singlechip and the WIFI control card are fixed on the battery box shell through screws, the battery pack is fixed in the battery box shell, and the battery box shell is fixed on the main frame of the scanner through screws.
Preferably, the motor is provided with a speed reducer.
Preferably, the battery pack supplies power to the motor, the motor controller, the WIFI control card, the singlechip and the positioning device respectively, so that the equipment can work normally, the computer transmits information to the WIFI control card through the antenna in a wireless mode, the WIFI control card transmits information to the singlechip, the singlechip analyzes data and sends instructions to the motor controller to control the motor to rotate, the driving gear is driven to move on the track so as to change the shooting position, the image acquisition function is realized, the instructions are sent to the WIFI control card through the computer, the WIFI control card controls the digital detector to acquire data and transmit the data back to the computer so as to store and analyze the data, the adjustable curvature bracket is replaced so as to adapt to detection of pipelines with different pipe diameters, the lower part of the digital detector is provided with a supporting wheel, the digital detector and the pipelines are always horizontal and always consistent in distance, the fixation of focal length is ensured, and the imaging quality is ensured.
Preferably, the positioning device is a GPS, or a beidou module.
Preferably, the diameter of the scanning pipeline of the scanner is 600-1500mm.
Preferably, the rack track is specially designed for the DR-Star scanner, the elasticity of the spring support leg is used for adapting to corrosion-resistant layers with different thicknesses on a pipeline and providing enough tension force, the DR-Star scanner and a ray machine chassis are fixed on the rack track and connected with the C-shaped arm through a quick-release pin shaft, the fixing is reliable, a motor on the DR-Star scanner is meshed with a tooth block on the rack track through a driving gear, the walking is stable, the walking is free from offset, the cooperation of the C-shaped arm ensures that a DR flat plate and the ray machine always overlap with the center of the pipeline, and two transparent modes of center exposure and double-wall single-image outside exposure can be compatible, so that various detection environments on site are convenient.
The beneficial effects of the invention are as follows: the device can be suitable for the application of pipelines with different diameters; the integrated structure has small volume, no external battery connection and convenient field operation; the hot plug of the battery is supported, network disconnection caused by the midway replacement of the battery can be avoided, and time waste caused by secondary networking is avoided; wireless control and wireless data transmission increase the safe operating distance of personnel; the GPS and Beidou positioning system is arranged, so that the positions of the welding seams can be positioned through the position coordinates, and the falsification of detection personnel can be effectively avoided; the temperature control circuit with the temperature sensor is adopted to adjust the working temperature of the digital detector, so that the digital detector is not influenced by the temperature of the external environment and can work in cold environment and high temperature environment; the single-chip photographing is adopted, so that the spatial resolution of the image is high, and the imaging sensitivity is high; image stitching can be performed by using the cooperation of the tag tape and software to form continuous images; the lower part of the digital detector is provided with the supporting wheel, so that the digital detector and the pipeline are always horizontal and always consistent in distance, and the fixation of the focal length is ensured, thereby ensuring the imaging quality; the rail type structure is adopted, so that the scanner can be quickly disassembled; the digital detector bracket is provided with a spring compression structure which can keep the pretightening force between the bracket and the pipeline, thereby ensuring the fixation of the focal length.
Drawings
The invention is further illustrated with reference to the following figures:
FIG. 1 is a block diagram of the present invention;
FIG. 2 is an enlarged block diagram of the spring support of the present invention;
FIG. 3 is a block diagram of a control box of the present invention;
FIG. 4 is a block diagram of a control box of the present invention;
fig. 5 is a structural view of the battery case of the present invention;
fig. 6 is a structural view of the battery case of the present invention;
FIG. 7 is a block diagram of the present invention;
FIG. 8 is a block diagram of the present invention;
FIG. 9 is a block diagram of the present invention;
FIG. 10 is a block diagram of a temperature control system according to the present invention
FIG. 11 is a block diagram of the installed state of the present invention;
FIG. 12 is a block diagram of the remote control of the present invention;
FIG. 13 is a schematic diagram of a detection process of the present invention;
FIG. 14 is a schematic view of the weld head positioning of the present invention;
FIG. 15 is a schematic view of a marker band of the present invention;
fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15 show: 1. control box, 2, spring bracket, 3, digital detector bracket, 4, digital detector, 5, supporting wheel, 6, motor, 7, battery box, 8, scanner main frame, 9, adjusting hand wheel, 10, spring, 11, linear bearing component, 12, motor controller, 13, filter board, 14, control box shell, 15, positioning device, 16, antenna, 17, singlechip, 18, WIFI control card, 19, battery box shell, 20, battery pack, 21, adjustable curvature bracket, 22, driving gear, 23, temperature control system, 24, scanner, 25, C-shaped arm, 26, tooth piece, 27, ray machine, 28, quick-release pin, 29, ray machine chassis, 30, spring leg, 31, rack rail, 32, temperature control circuit, 231, temperature sensor, 232, heating device, 233, semiconductor refrigerating device.
Detailed Description
The present invention will be described in further detail with reference to the drawings, which are only for the purpose of illustrating the invention, and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15, an automatic scanner for DR radiography of a pipeline, wherein the scanner 24 comprises a control box 1, a spring bracket 2, a digital detector bracket 3, a digital detector 4, a supporting wheel 5, a motor 6, a battery box 7 and a scanner main frame 8, and the digital detector bracket 3 is fixed on the spring bracket 2 through screws; the lower part of the digital detector 4 is provided with a supporting wheel 5, the supporting wheel 5 is fixed on the digital detector bracket 3 through a screw, the distance between a detection workpiece and the digital detector 4 is ensured, the motor 6 is fixed on the scanner main frame 8 through a screw, the spring bracket 2 is fixed on the scanner main frame 8 through a screw, the battery box 7 is fixed on the scanner main frame 8 through a screw, and the control box 1 is fixed on the scanner main frame 8 through a screw;
the lower end of the main frame 8 of the scanner is connected with a rack track 31 and a C-shaped arm 25, a tooth block 26 and a spring support 30 are arranged on the rack track 31, the rack track 31 is connected with a ray machine chassis 29 on a ray machine 27, a quick-release pin shaft 28 is arranged on the ray machine chassis 29, and a driving gear 22 is meshed with the tooth block 26 on the rack track 31;
the temperature control system 23 is installed on the digital detector 4, so that the temperature of the digital detector 4 is always maintained at 23+/-5 ℃, the temperature control system 23 adopts a temperature control circuit 32 with a temperature sensor 231, the temperature control system 23 comprises two temperature sensors 231, a heating device 232 and a semiconductor refrigerating device 233, the two temperature sensors 231 are respectively connected with the heating device 232 and the semiconductor refrigerating device 233, the temperature sensor 231 can detect the working temperature of equipment in real time, and when the working temperature of the digital detector 4 is lower than the stable working temperature, namely, the temperature is lower than 18 ℃, the heating device 232 is automatically started, and the digital detector 4 is heated and preheated integrally; when the temperature of the digital detector 4 is higher than the steady operation temperature, that is, the temperature is higher than 28 ℃, the semiconductor refrigeration device 233 starts to operate, the temperature of the digital detector 4 is reduced to the steady operation temperature, and the temperature control circuit 32 with the temperature sensor 231 is used for the temperature control system 23.
Preferably, the control box 1 comprises a motor controller 12, a filter plate 13 and a control box shell 14, wherein the motor controller 12 and the filter plate 13 are fixed on the control box shell 14 through screws, and the control box shell 14 is fixed on the scanner main frame 8 through screws.
Preferably, the spring bracket 2 comprises an adjusting hand wheel 9, a spring 10 and a linear bearing assembly 11, the height of the linear bearing assembly 11 can be adjusted by rotating the adjusting hand wheel 9, so that the distance between the digital detector bracket 3 and a detection workpiece can be adjusted, and the spring 10 compresses the supporting wheel 5 and the workpiece to ensure the focal length.
Preferably, the battery box 7 comprises a positioning device 15, an antenna 16, a single-chip microcomputer 17, a WIFI control card 18, a battery box shell 19 and a battery pack 20, wherein the positioning device 15 is fixed on the battery box shell 19 and connected with the single-chip microcomputer 17, the antenna 16, the single-chip microcomputer 17 and the WIFI control card 18 are fixed on the battery box shell 19 through screws, the battery pack 20 is fixed in the battery box shell 19, and the battery box shell 19 is fixed on the main scanner frame 8 through screws.
Preferably, the motor 6 is provided with a speed reducer.
Preferably, the battery pack 20 supplies power to the motor 6, the motor controller 12, the WIFI control card 18, the singlechip 17 and the positioning device 15 respectively, so that the device can work normally, the computer transmits information to the WIFI control card 18 through the antenna 16 in a wireless mode, the WIFI control card 18 transmits information to the singlechip 17, the singlechip 17 analyzes data and sends instructions to the motor controller 12 to control the motor 6 to rotate, the driving gear 22 is driven to move on a track so as to change the shooting position, the image acquisition function, the WIFI control card 18 sends instructions to the WIFI control card 18 through the computer, the WIFI control card 18 controls the digital detector 4 to acquire data and transmit the data back to the computer so as to store and analyze the data, the adjustable curvature bracket 21 is replaced so as to adapt to detection of pipelines with different pipe diameters, the lower part of the digital detector 4 is provided with the supporting wheel 5, the digital detector 4 is always horizontal and always consistent with the pipelines, the distance is always ensured, and the focal length is fixed, so that the imaging quality is ensured.
Preferably, the positioning device 15 is a GPS, or a beidou module.
Preferably, the diameter of the scanning pipeline of the scanner 24 is 600-1500mm, and the size of the scanning pipe diameter is determined according to the specification setting of the rack rail 31.
Preferably, the rack track 31 is specially designed for the DR-Star scanner 24, the elasticity of the spring support legs 30 is used for adapting to corrosion-proof layers with different thicknesses on pipelines and providing enough tension force, the DR-Star scanner 24 and the ray machine chassis 29 are fixed on the rack track 31, the rack track 31 is connected with the C-shaped arm 25 through the quick-release pin shaft 28, the rack track is reliable in fixation, the motor 6 on the DR-Star scanner 24 is meshed with the tooth block 26 on the rack track 31 through the driving gear 22, the walking is stable, the walking is free from offset, and the C-shaped arm 25 is matched to ensure that the DR panel and the ray machine 27 always coincide with the center of the pipelines, and two transilluminating modes of center exposure and double-wall single-image external exposure can be compatible, so that various detection environments on site are facilitated.
As shown in fig. 9, the angle of the variable curvature support 21 is adjusted by adjusting screws to achieve curvature transformation, enabling the scanner 24 to accommodate a 600-1500mm pipe diameter.
As shown in fig. 12, the remote control computer performs wireless communication with the device through the high-power router, and can remotely send an instruction to the motor controller 12 to control the motor 6 to rotate, so as to drive the driving gear 22 to move forward, backward, stop, speed adjust and position on the rack rail 31, so as to change the shooting position.
As shown in fig. 13, the computer and the scanner 24 are wirelessly connected through a high-power router, so that the safe operation distance of personnel is increased; and can be in real time to image analysis processing, save data through the computer, improve detection efficiency by a wide margin, adopt wireless data transmission can avoid wired connection equipment heavy, cable easily twine, easy ageing, easy broken line scheduling problem, wireless data transmission rate is faster, the error rate is lower, the network security is good, the reliability is high, the network deployment installation is simple, and it is convenient to maintain.
As shown in FIG. 14, the device is provided with a Beidou/GPS positioning module, a user can select through a computer according to local conditions, the positioning system can record the position coordinates of each weld leg, and store data into an image file, so that the correspondence between the weld leg position and GPS signals is ensured, the occurrence of fake cases is prevented on one hand, and accurate position information is provided for later weld leg tracking on the other hand.
As shown in fig. 10, the field environment temperature is-30 to +50 ℃ according to the actual field use environment, and in order to ensure the stable operation of the digital detector 4, the digital detector 4 needs to be maintained at 23±5 ℃ all the time. In order to meet the requirement of temperature control, a set of temperature control system 23 is arranged on the equipment, the system consists of two temperature sensors 231, a heating device 232 and a semiconductor refrigerating device 233, the temperature sensors 231 can detect the working temperature of the equipment in real time, when the working temperature of the equipment is lower than 18 ℃, the heating device 232 is automatically started, the whole heating and the preheating are carried out on the digital detector 4, and when the temperature reaches 23 ℃, the heating device 232 automatically stops heating; when the temperature of the equipment is higher than 28 ℃, the semiconductor refrigeration device 233 starts to work, the equipment is cooled, and when the temperature is reduced to 23 ℃, the semiconductor refrigeration device 233 stops working; the whole temperature is automatically controlled, so that the temperature of the equipment is always maintained at 23+/-5 ℃.
In the detection process, projections of overlapping marks on the mark tape are arranged on each image. And combining lap marks on two adjacent images through a computer pattern recognition algorithm, combining images of a plurality of static digital films of the whole pipeline welded junction into one film, enabling a plurality of independent DR images to be combined into one continuous DR image through the lap marks, facilitating later image processing, and ensuring detection accuracy.
As shown in fig. 1, the digital detector bracket 3 adopts a unique cross shaft structure, and provides enough pressure through the spring bracket 2, so that the digital detector 4 and the pipeline are always horizontal, the distance is always consistent, and the focal length is relatively fixed, thereby ensuring the imaging quality.
As shown in fig. 11, the track type structure: the rack rail 31 is specially designed for the DR-Star scanner 24, the DR-Star scanner 24 and the ray machine chassis 29 are fixed on the rack rail 31 through the elasticity of the spring support legs 30 to adapt to corrosion-resistant layers with different thicknesses on a pipeline and provide enough tension, the rack rail 31 is connected with the C-shaped arm 25 through the quick-release pin shaft 28, the rack rail 31 is fixed and reliable, the motor 6 with a speed reducer on the DR-Star scanner 24 performs meshing movement with the tooth block 26 on the rack rail 31 through the driving gear 22, the walking is stable, the walking is free of offset, the C-shaped arm 25 is matched to ensure that the DR panel and the ray machine 27 always coincide with the center of the pipeline, and two transillumination modes of center exposure and double-wall single-image outside exposure can be compatible, so that various detection environments on site are facilitated;
the digital detector bracket adopts a unique cross shaft structure, and provides enough pressure through the spring bracket, so that the digital detector and the pipeline are ensured to be always horizontal, the distance is always consistent, and the focal length is relatively fixed, thereby ensuring the imaging quality;
the scanner 24 is provided with a spring support 2 compression structure, so that sufficient pressure is provided for the digital detection support 3 and the workpiece, the digital detector 4 is ensured to be always parallel to the surface of the pipeline, the distance is always consistent, and the focal length is relatively fixed, thereby ensuring the imaging quality.
The scanner 24 is powered by an additional power supply, the battery box 7 is automatically charged, the quick replacement of the battery is realized by adopting a detachable battery, the cruising ability of the device is improved, the device is convenient to move, and the labor intensity of operators is reduced.
The invention is provided with the variable curvature bracket 21, and can be suitable for the application of pipelines with different diameters; the integrated structure has small volume, no external battery connection and convenient field operation; the hot plug of the battery is supported, network disconnection caused by the midway replacement of the battery can be avoided, and time waste caused by secondary networking is avoided; wireless control and wireless data transmission increase the safe operating distance of personnel; the GPS and Beidou positioning system is arranged, so that the positions of the welding seams can be positioned through the position coordinates, and the falsification of detection personnel can be effectively avoided; the temperature control circuit 32 with the temperature sensor 231 is adopted to adjust the working temperature of the digital detector 4, so that the digital detector is not influenced by the external environment temperature and can work in cold environment and high temperature environment; the single-chip photographing is adopted, so that the spatial resolution of the image is high, and the imaging sensitivity is high; image stitching can be performed by using the cooperation of the tag tape and software to form continuous images; the lower part of the digital detector 4 is provided with a supporting wheel 5, so that the digital detector 4 and the pipeline are always horizontal, the distance is always consistent, and the fixation of the focal length is ensured, thereby ensuring the imaging quality; the rail type structure is adopted, so that the scanner can be quickly disassembled; the digital detector bracket 3 is provided with a spring compression structure which can keep the pretightening force between the bracket and the pipeline, thereby ensuring the fixation of the focal length.
The above embodiments of the present invention are not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (9)
1. An automatic scanner for pipeline DR radiography, which is characterized in that: the scanner (24) comprises a control box (1), a spring bracket (2), a digital detector bracket (3), a digital detector (4), a supporting wheel (5), a motor (6), a battery box (7) and a scanner main frame (8), wherein the digital detector bracket (3) is fixed on the spring bracket (2) through a screw, the supporting wheel (5) is arranged at the lower part of the digital detector (4), the supporting wheel (5) is fixed on the digital detector bracket (3) through a screw, the motor (6) is fixed on the scanner main frame (8) through a screw, the spring bracket (2) is fixed on the scanner main frame (8) through a screw, the battery box (7) is fixed on the scanner main frame (8) through a screw, and the control box (1) is fixed on the scanner main frame (8) through a screw;
the lower end of the main frame (8) of the scanner is connected with a rack track (31) and a C-shaped arm (25), a tooth block (26) and a spring support leg (30) are arranged on the rack track (31), the rack track (31) is connected with a ray machine chassis (29) on a ray machine (27), a quick-release pin shaft (28) is arranged on the ray machine chassis (29), and a driving gear (22) is meshed with the tooth block (26) on the rack track (31);
the temperature control system (23) is arranged on the digital detector (4), so that the temperature of the digital detector (4) is always kept at 23+/-5 ℃, the temperature control system (23) adopts a temperature control circuit (32) with a temperature sensor (231), the temperature control system (23) comprises the temperature sensor (231), a heating device (232) and a semiconductor refrigerating device (233), the two temperature sensors (231) are respectively connected with the heating device (232) and the semiconductor refrigerating device (233), the temperature sensor (231) can detect the working temperature of equipment in real time, and when the working temperature of the digital detector (4) is lower than the stable working temperature, namely, the temperature is lower than 18 ℃, the heating device (232) is automatically started, and the digital detector (4) is heated and preheated integrally; when the temperature of the digital detector (4) is higher than the stable working temperature, namely, the temperature is higher than 28 ℃, the semiconductor refrigerating device (233) starts to work, the temperature of the digital detector (4) is reduced to the stable working temperature, and the temperature control system (23) adopts a temperature control circuit (32) with a temperature sensor (231).
2. An automatic scanner for pipeline DR radiography according to claim 1, wherein: the control box (1) comprises a motor controller (12), a filter plate (13) and a control box shell (14), wherein the motor controller (12) and the filter plate (13) are fixed on the control box shell (14) through screws, and the control box shell (14) is fixed on the main frame (8) of the scanner through screws.
3. An automatic scanner for pipeline DR radiography according to claim 1, wherein: the spring support (2) comprises an adjusting hand wheel (9), a spring (10) and a linear bearing assembly (11), the distance between the digital detector support (3) and a detection workpiece can be adjusted by rotating the adjusting hand wheel (9) to adjust the height of the linear bearing assembly (11), and the spring (10) compresses the supporting wheel (5) and the workpiece to ensure the focal length.
4. An automatic scanner for pipeline DR radiography according to claim 1, wherein: the battery box (7) comprises a positioning device (15), an antenna (16), a single-chip microcomputer (17), a WIFI control card (18), a battery box shell (19) and a battery pack (20), wherein the positioning device (15) is fixed on the battery box shell (19) and connected with the single-chip microcomputer (17), the antenna (16), the single-chip microcomputer (17) and the WIFI control card (18) are fixed on the battery box shell (19) through screws, the battery pack (20) is fixed in the battery box shell (19), and the battery box shell (19) is fixed on a main scanner frame (8) through screws.
5. An automatic scanner for pipeline DR radiography according to claim 1, wherein: the motor (6) is provided with a speed reducer.
6. An automatic scanner for pipeline DR radiography according to claim 4, wherein: the battery pack (20) supplies power to the motor (6), the motor controller (12), the WIFI control card (18), the singlechip (17) and the positioning device (15) respectively, so that the equipment can work normally, the computer transmits information to the WIFI control card (18) through the antenna (16) in a wireless mode, the WIFI control card (18) transmits information to the singlechip (17), the singlechip (17) analyzes data and sends instructions to the motor controller (12) to control the motor (6) to rotate, the driving gear (22) is driven to move on the track, the shooting position is changed, the image acquisition function is achieved, the instructions are sent to the WIFI control card (18) through the computer, the WIFI control card (18) controls the digital detector (4) to acquire data and transmit the data back to the computer, so that data can be stored and analyzed, the adjustable curvature support (21) is replaced, so that the data can be detected by adapting to pipelines with different pipe diameters, the digital detector (4) is always horizontal and always consistent with the pipelines, the focal distance is ensured, and the imaging quality is ensured.
7. An automatic scanner for pipeline DR radiography according to claim 4, wherein: the positioning device (15) is a GPS or Beidou module.
8. An automatic scanner for pipeline DR radiography according to claim 1, wherein: the diameter of the scanning pipeline of the scanner (24) is 600-1500mm.
9. An automatic scanner for pipeline DR radiography according to claim 1, wherein: the rack track (31) is specially designed for the DR-Star scanner (24), the elasticity of the spring support legs (30) is used for adapting to corrosion-proof layers with different thicknesses on pipelines and providing enough tension force, the DR-Star scanner (24) and the ray machine chassis (29) are fixed on the rack track (31), the rack track is connected with the C-shaped arm (25) through the quick-release pin shaft (28), the rack track is fixed reliably, the motor (6) on the DR-Star scanner (24) is meshed with the tooth block (26) on the rack track (31) through the driving gear (22), the walking is stable, the walking is free of offset, the C-shaped arm (25) is matched to ensure that the DR flat plate and the ray machine (27) are always overlapped with the center of the pipelines, and two transmission modes of center exposure and double-wall single-shadow external exposure can be compatible, so that various detection environments on site are convenient.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204008507U (en) * | 2014-08-22 | 2014-12-10 | 中国石油天然气第七建设公司 | Rotary pipeline weld seam X ray digital detecting device |
| CN105125232A (en) * | 2015-09-28 | 2015-12-09 | 中国科学院苏州生物医学工程技术研究所 | CT (computed tomography) scanner with DR (digital radiography) filming function |
| CN209086180U (en) * | 2018-10-15 | 2019-07-09 | 廊坊市新思维科技有限公司 | A kind of pipeline DR radiography automatic scanning device |
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| CN104605876A (en) * | 2014-12-12 | 2015-05-13 | 沈阳东软医疗系统有限公司 | Detector module and detector system of CT machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204008507U (en) * | 2014-08-22 | 2014-12-10 | 中国石油天然气第七建设公司 | Rotary pipeline weld seam X ray digital detecting device |
| CN105125232A (en) * | 2015-09-28 | 2015-12-09 | 中国科学院苏州生物医学工程技术研究所 | CT (computed tomography) scanner with DR (digital radiography) filming function |
| CN209086180U (en) * | 2018-10-15 | 2019-07-09 | 廊坊市新思维科技有限公司 | A kind of pipeline DR radiography automatic scanning device |
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