Oil pipe body flaw detection cleaning system

Abstract

The invention provides an oil pipe body flaw detection cleaning system which comprises a detection station and a to-be-cleaned station which are arranged side by side, a plurality of overturning frames are arranged between the detection station and the to-be-cleaned station, a detection device and an off-line conveying belt are arranged at the two ends of the detection station respectively, and a movable moving table is arranged on a fixed base. One end of the movable table is provided with a center extending rod set and a plurality of outer side extending rod sets, one end of the to-be-cleaned station is provided with an electromagnetic heating device and a cleaning station, the detection station and the to-be-cleaned station are each provided with a plurality of jacking traction units at intervals along a straight line, and each jacking traction unit comprises a liftable traction wheel; the traction wheel abuts against the lower end of the oil pipe to rotate so that the oil pipe can move in the length direction, and automatic cleaning and flaw detection of the oil drill pipe are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oil drilling pipe cleaning, in particular to a pipe body flaw detection and cleaning system. BACKGROUND

[0002] Currently, there is a trend of intelligence and automation in the process of oil exploitation and equipment maintenance and transportation. Many oil fields have been developed to the middle and later stages, especially the change from water flooding to polymer flooding, and the problem of wax and scale deposition in oil wells is very serious. After the pipeline is scaled, the flow channel is narrowed, the pressure loss is increased, the pipeline working efficiency is reduced, and even safety hazards such as pipeline blockage and pump jamming are caused.

[0003] Cleaning is an important step of well repair operation, and the cleaned oil pipe can be recycled for continuous use if it is not damaged.

[0004] Because the scale of the oil pipe is complex and diverse, including oil stains, rust, crystalline salt and crystalline wax and other substances, direct flaw detection of the oil pipe is only accurate for the partially exposed part, and the precision of flaw detection in the area with attached dirt is limited. Therefore, a flaw detection and cleaning system that combines flaw detection and cleaning is urgently needed. SUMMARY

[0005] The present application provides a pipe body flaw detection and cleaning system, which solves the problems of automatic cleaning and flaw detection of oil drilling pipes.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is: a pipe body flaw detection and cleaning system, comprising a detection station and a cleaning station arranged side by side, a plurality of turnover frames are arranged between the detection station and the cleaning station, a detection device and an offline conveying belt are respectively arranged at both ends of the detection station, a movable moving table is arranged on the fixed base, a central probe rod group and a plurality of outer probe rod groups are arranged at one end of the moving table, an electromagnetic heating device and a cleaning station are arranged at one end of the cleaning station, a plurality of spaced-apart jacking traction units are arranged along a straight line at the detection station and the cleaning station, respectively, the jacking traction unit comprises a liftable traction wheel, and the traction wheel is abutted against the lower end of the oil pipe to rotate so as to move the oil pipe along the length direction.

[0007] In the preferred scheme, a tail support is arranged at one end of the fixed base, the plurality of outer probe rod groups are arranged on the outer side of the central probe rod group in a circumferential direction, the central probe rod group and the outer probe rod group are slidably inserted into the tail support, a plurality of first detection assemblies facing the inner wall of the oil pipe are arranged at the end of the central probe rod group in a circumferential direction, a second detection assembly facing the outer wall of the oil pipe is arranged on each outer probe rod group, the central probe rod group and the outer probe rod group each comprise an inner screw rod, a middle sleeve rod and an outer sleeve rod which are sequentially sleeved, the first detection assembly or the second detection assembly is connected to the end of the middle sleeve rod, the middle sleeve rod is slidably connected to the outer sleeve rod, the middle sleeve rod is threadedly connected to the inner screw rod, the outer sleeve rod moves synchronously with the moving table, and the inner screw rod rotates to make the middle sleeve rod extend out of the outer sleeve rod.

[0008] The mobile station moves and drives the center extension rod group and the outer extension rod group to move to one side, in the process, the inner screw rotates, and each middle sleeve rod can be extended from the center extension rod group and the outer extension rod group, driving the first detection assembly and the second detection assembly to detect along the length direction of the oil pipe. Two-stage telescopic structure is adopted, which meets the longer oil pipe, and the total length of the fixed base does not need to be too long, thereby reducing the floor area.

[0009] The detection assembly can integrate a camera, a light supplement lamp and an ultrasonic probe.

[0010] In the preferred scheme, the outer sleeve rod is provided with a sliding guide sleeve at the front end, the inner wall of the sliding guide sleeve is provided with a plurality of strip-shaped grooves in the circumferential direction, the outer wall of the middle sleeve rod is provided with a plurality of strip-shaped guide protrusions in the circumferential direction, each strip-shaped guide protrusion is clamped in each strip-shaped groove to slide, the inner wall of the middle sleeve rod is provided with a screw sleeve, and the outer wall of the inner screw is threadedly connected with the screw sleeve; the outer wall of the front end of the detection device is sleeved with a first support bushing, the outer wall of the first support bushing abuts against the inner wall of the middle sleeve rod, the outer wall of the tail end of the middle sleeve rod is sleeved with a second support bushing, and the outer wall of the second support bushing abuts against the inner wall of the outer sleeve rod.

[0011] The sliding guide sleeve plays a role in preventing the rotation of the middle sleeve rod and allows the middle sleeve rod to move forward and backward.

[0012] Since the middle sleeve rod is too long, the inner thread is difficult to process, and therefore a screw sleeve with an inner thread is used at the tail end of the middle sleeve rod to cooperate with the inner screw, the screw sleeve is fixedly integrated with the end of the middle sleeve rod and moves synchronously.

[0013] The first support bushing and the second support bushing can be made of ceramic or Teflon material, which has a small friction coefficient and good wear resistance.

[0014] The first support bushing is fixedly integrated with the detection device, and the second support bushing is fixedly integrated with the middle sleeve rod. Since the outer sleeve rod and the inner screw do not extend forward, when the middle sleeve rod extends forward, the tail end is supported on the inner wall of the outer sleeve rod through the second support bushing, the front end of the inner screw always supports the front end after retraction or the middle section after extension of the middle sleeve rod, two-point support is formed, and the movement of the middle sleeve rod is more stable and reliable.

[0015] Since most of the inner and outer walls of the middle sleeve rod are in a non-contact state with the outer sleeve rod or the inner screw, friction resistance is avoided, the key parts such as the sliding guide sleeve, the first support bushing, the second support bushing and the screw sleeve are only in contact, and only the machining precision of these parts needs to be improved, so that the smooth sliding of the middle sleeve rod can be ensured.

[0016] Due to the accumulation of oil dirt on the inner wall of the oil pipe, the first detection assembly at the front end of the center extension rod group may be covered by the oil dirt when the center extension rod group is deeply inserted, which affects the detection.

[0017] Due to the limited diameter of the oil pipe, if the cleaning water source pipe is externally arranged, i.e. in the interlayer space between the first detection assembly and the oil pipe, it may cause the pipe to be rubbed or squeezed. Since the detection head is multiple, the multiple pipes may be intertwined.

[0018] In the preferred scheme, the first detection assembly is provided with multiple detection heads and cleaning spray nozzles facing the detection heads in the circumferential direction, the middle sleeve rod and the inner screw rod are hollow structures, the front end of the middle sleeve rod is provided with an end face through hole, the end face through hole is provided with a plugging head, the plugging head is provided with a central passage part with one end communicating with the end face through hole, the side wall of the central passage part is provided with multiple shunt holes in the circumferential direction, each shunt hole is communicated with the cleaning spray nozzle through a connecting pipeline, the hollow structure of the middle sleeve rod and the inner screw rod is provided with a spiral hose, the front end of the spiral hose is communicated with the central passage part, and the rear end of the spiral hose is out of the rear end of the inner screw rod.

[0019] The cleaning spray nozzle is communicated with the cleaning water source. The cleaning spray nozzle is installed on the rear end flange structure of the first detection assembly.

[0020] The rear end of the spiral hose is communicated with the cleaning water source. The spiral structure enables the spiral hose to be self-adaptively lengthened when the middle sleeve rod is extended. The inner screw rod and the cleaning station outside the spiral hose can be used as a protective sleeve to prevent the spiral hose from being exposed and damaged. The water source is divided into multiple paths through the plugging head, and each detection head is cleaned at the same time. The remaining wires and pipes can be connected to the rear end from the hollow structure in the same way.

[0021] The front end of the middle sleeve rod is provided with a threaded hollow adapter sleeve, the hollow adapter sleeve is arranged outside the plugging head, the first detection assembly is threadedly connected with the hollow adapter sleeve, the hollow adapter sleeve is provided with multiple through holes in the circumferential direction, and the connecting pipelines pass through the through holes.

[0022] The hollow adapter sleeve is hollow, used for connecting the front end of the middle sleeve rod and the first detection assembly, and through holes are needed to be opened in the side wall in order to avoid the connecting pipelines.

[0023] In the preferred scheme, the moving table is provided with a cavity part, the cavity part is provided with an inner sleeve seat, the bottom end of the inner sleeve seat is provided with a rotatable driving flange shaft and multiple driven flange shafts, the driven flange shafts are arranged outside the driving flange shaft in the circumferential direction, the driving flange shaft is sleeved with a first central gear outside, the driven flange shafts are sleeved with first driven gears outside, the first driven gears are engaged with the first central gear, the rear ends of the central detection rod assembly and the outer side detection rod assembly are provided with first flange pipe sleeves, one end of the first flange pipe sleeve is sleeved with the inner screw rod, the other end of the first flange pipe sleeve is connected with the driving flange shaft or the driven flange shaft, the front end of the inner sleeve seat is further provided with a partition layer plate, the tail ends of the outer sleeve rods are sleeved with hollow second flange pipe sleeves, and the second flange pipe sleeves are connected with the partition layer plate.

[0024] The inner screw rod passes through the second flange pipe sleeve and the partition layer plate to be sleeved with the first flange pipe sleeve.

[0025] When the driving flange shaft rotates, the first central gear drives the surrounding first driven gear to rotate, so that each internal screw rod rotates synchronously.

[0026] The driving flange shaft is in the center, and the first flange tube sleeve connected therewith is a hollow structure, facilitating the spiral hose to pass out from the tail.

[0027] In the preferred scheme, the mobile platform has a second central gear and a second driven gear at the rear end, and a first driving motor is arranged at one side end of the mobile platform, with a main driving gear sleeved on the shaft end of the first driving motor, the main driving gear being engaged with the second central gear, and the second driven gear being sleeved on the driving flange shaft.

[0028] The first driving motor drives the main driving gear to rotate, which in turn drives the second central gear and the second driven gear to rotate, so as to drive the driving flange shaft to rotate.

[0029] In the preferred scheme, the fixed base is provided with a long lead screw and a guide rail sliding block assembly, and the mobile platform has a rotatable nut at the lower end, the nut being sleeved on the guide rail sliding block assembly, the lower end of the mobile platform being slidingly connected to the fixed base through the guide rail sliding block assembly, and the second central gear being sleeved on the nut.

[0030] The second central gear rotates synchronously with the nut, and drives the center probe rod set and the outer side probe rod set to extend at the same time, and drives the mobile platform to move to the front end, so that the mobile platform, the center probe rod set and the outer side probe rod set can be driven to move synchronously by a single motor, the number of driving related components is reduced, and the cost is saved. When the mobile platform moves to the most front end, the center sleeve rod and the outer sleeve rod of the center probe rod set and the outer side probe rod set also extend to the most front end, and when the mobile platform returns to the most tail end, the center sleeve rod also retracts to the most tail end at the same time.

[0031] In order to save hardware cost and reduce control difficulty, the number of probes should not be too large, the area of the oil pipe directly opposite the probe is close and the scanning accuracy is high, but the oil pipe is far away from the two probes at the position of the center line between the two adjacent probes and is at an oblique angle, so the detection accuracy is low.

[0032] The tail support and the mobile platform are both provided with rotatable rotating seat plates, the rotating seat plates are provided with a plurality of sleeve rod guide sleeves, the sleeve rod guide sleeves are sleeved on the outer sleeve rods, the rotating seat plates and the inner sleeve seats can rotate synchronously, the rotating seat plates are sleeved with transmission rings on the outside, and the mobile platform is further provided with a second driving motor at one side end, the shaft end of the second driving motor is sleeved with a transmission wheel, and the transmission wheel is in transmission with the transmission ring.

[0033] The transmission ring and the transmission wheel can be gears or friction wheels.

[0034] When the mobile station advances, the second drive motor is in a non-working state, and when the mobile station reaches the front end, it means that the whole oil pipe is scanned once. The second drive motor drives the transmission wheel to rotate, so that the transmission ring drives the rotating seat plate and the inner sleeve seat to rotate by a certain angle. Taking the example of the central probe-out rod group with three probe heads, the angle is sixty degrees. Then the mobile station returns, at this time, the probe switches the circumferential position, and the oil pipe is scanned again at the weak scanning position, so as to improve the overall flaw detection accuracy.

[0035] After the mobile station resets, the circumferential angle of the rotating seat plate and the inner sleeve seat also resets, and there is no risk of winding.

[0036] When the first drive motor is clamped by the brake, the second driven gear, the drive flange shaft and the first central gear do not rotate, and the rotating seat plate and the inner sleeve seat rotate, so that the first driven gear will mesh and rotate by a certain angle relative to the first central gear. The oil pipe of the outer probe-out rod group will be extended or shortened by a small section, and the distance is relatively short, which is within the redundant range of working stroke and does not affect the flaw detection effect.

[0037] In the preferred scheme, the turnover frame includes a first turnover frame and a second turnover frame, the first interface frame and a plurality of linearly spaced first turnover frames are arranged at the detection station, the second interface frame and a plurality of linearly spaced second turnover frames are arranged at the cleaning station, the first turnover frame and the second turnover frame each include a base frame and a concave frame, the base frame is provided with a hinge seat at the upper end, the concave frame is rotationally connected with the hinge seat at the middle part, the base frame is provided with a buffer at one end, and the base frame is further provided with a turnover cylinder, one end of the cylinder rod of the turnover cylinder is connected with the concave frame, and the other end of the concave frame abuts against the buffer.

[0038] After the detection device completes flaw detection, the concave frames of the first turnover frames are synchronously inclined, the oil pipe rolls out of the notch and falls to the V-shaped structure of the second interface frame at the cleaning station. Under the guidance of the V-shaped structure of the second interface frame, the oil pipe is just stationary above the traction wheel, the traction wheel at the cleaning station is jacked up and rotated to send the oil pipe into the electromagnetic heating device and the cleaning station for cleaning. After cleaning, the traction wheel is turned over to move the oil pipe back to the cleaning station, the concave frames of the second turnover frames at the cleaning station are inclined, the oil pipe rolls into the V-shaped structure of the first interface frame, the central probe-out rod group and the outer probe-out rod group of the detection device are extended, and secondary flaw detection is performed. If there is no damage, the traction wheel jacks up to send the oil pipe to the offline conveying belt for offline.

[0039] The offline conveying belt is a conveying belt with a V-shaped roller.

[0040] In the preferred scheme, the cleaning station is provided with an end support device on the side away from the electromagnetic heating device, the end support device is provided with an overhanging shaft on the side close to the cleaning station, the end of the overhanging shaft is arranged at the cleaning station, the cleaning station is provided with a cleaning box body, the cleaning box body is provided with an inner chamber, both ends of the inner chamber are provided with passage holes, the inner chamber is provided with an outer cleaning device and an inner cleaning device, the end of the overhanging shaft is connected with the inner cleaning device, the inner cleaning device is provided with circumferentially arranged inner nozzles, the outer cleaning device is provided with circumferentially arranged outer nozzles, an oil pipe passes through the electromagnetic heating device and the passage holes and is sleeved on the outside of the overhanging shaft, the inner cleaning device and the outer cleaning device clean the inner wall and the outer wall of the oil pipe respectively, and a plurality of jacking traction units are arranged in a straight line and at intervals below the oil pipe.

[0041] The inner nozzle is a biased nozzle, and because the external space is large, more nozzles can be arranged in the circumferential direction to spray the outer wall of the oil pipe in all directions without dead angles.

[0042] The traction wheel is a V-shaped wheel, which can lift the oil pipe below, a plurality of jacking traction units are arranged on both sides of the electromagnetic heating device, the traction wheel rotates to make the oil pipe advance to the right side, pass through the electromagnetic heating device, and the electromagnetic heating device uses an electromagnetic coil to perform segmented high-frequency heating on the oil pipe to soften part of the oil dirt, after the heating is completed, the oil pipe moves to the direction of the end support device under the traction of the jacking traction unit, gradually passes through the hollow area in the center of the inner baffle device, and is sleeved on the outside of the inner baffle device. The outer nozzle and the inner nozzle spray dry ice cleaning liquid to the outer wall and the inner wall of the oil pipe, the heated section of the oil pipe is rapidly cooled, because the thermal expansion coefficients of the oil dirt and the oil pipe are different, and under the action of the impact force, the oil dirt is separated from the wall of the oil pipe.

[0043] The jacking traction unit comprises a base frame, a liftable traction wheel frame is arranged on the base frame, a bearing seat is arranged on the traction wheel frame, and a speed reducer motor is arranged on one side of the traction wheel.

[0044] A guide rail sliding block mechanism and a jacking cylinder are arranged on the base frame, the traction wheel frame is slidably connected with the base frame through the guide rail sliding block mechanism, and the jacking cylinder jacks up the traction wheel frame.

[0045] Two bearing seats are arranged on the traction wheel frame, the shafts of the traction wheel frame are sleeved on the bearing seats, and the shaft end of the speed reducer motor is connected with the shaft.

[0046] Transverse limiting mechanisms are further arranged on both sides of the cleaning station, the transverse limiting mechanism comprises a stand, two transverse moving frames movably arranged opposite to each other are arranged on the stand, and rolling wheels rotatably arranged on the transverse moving frames.

[0047] The stand is provided with a transverse beam, a transverse moving guide rail mechanism is arranged on the transverse beam, the lower end of the transverse moving frame is connected with the transverse moving guide rail mechanism, the transverse beam is provided with a few-shaped lifting seat and a linear jacking cylinder is arranged on the few-shaped lifting seat to drive the transverse moving frame to move transversely. The rolling wheels are V-shaped wheels, the two rolling wheels are clamped in the center and can just contact the outer wall of the oil pipe, but do not hinder the movement of the oil pipe.

[0048] The straight lifting cylinder and the lifting cylinder can adopt a servo electric cylinder.

[0049] The lower end of the cleaning box body is provided with a maintenance door which can slide upward to clean the accumulated oil dirt and cleaning liquid.

[0050] The cleaning box body restrains the liquid sprayed by the outer cleaning device in the inner chamber, only leaving a passage hole for the oil pipe to pass through, so as to avoid too much cleaning liquid from splashing near the electromagnetic heating device and reduce the temperature of the heating section of the oil pipe.

[0051] In the preferred scheme, the outer extension shaft is further provided with an inner baffle device near the inner cleaning device, the inner baffle device comprises a plurality of inner scrapers arranged in the circumferential direction, the outer side of the inner scraper abuts against the inner wall of the oil pipe, the cleaning station is further provided with an outer scraper device, the outer scraper device comprises a plurality of outer scrapers arranged in the circumferential direction, the outer scraper abuts against the outer wall of the oil pipe; the end of the outer extension shaft is provided with a connecting segment, the inner cleaning device is rotationally sleeved with the connecting segment, the inner cleaning device comprises a communicating pipe part and a spray head part, the communicating pipe part communicates with the connecting segment, the spray head part is provided with a plurality of radial extension pipes in the circumferential direction, the inner nozzle is arranged at the end of the radial extension pipe, the spray axis of the inner nozzle is arranged in a different plane from the rotation axis of the inner cleaning device, and the spray recoil force of the inner nozzle drives the inner cleaning device to rotate.

[0052] The outer scraper device adopts a multi-leaf structure similar to a camera aperture, and the retraction degree of the outer scraper can be controlled by a lever.

[0053] The inner scrapers are arranged in the circumferential direction in an overlapping manner, the outer side of the outer extension shaft is sleeved with a sleeve ring, the sleeve ring is provided with a plurality of guide blocks in the circumferential direction, the guide blocks are sleeved with a scraper sliding sleeve which can slide, the scraper sliding sleeve is connected with the side end of the inner scraper away from the inner cleaning device, the end of the guide block is provided with a sunken groove structure, a spring is arranged in the sunken groove structure, the end of the spring abuts against the scraper sliding sleeve, the guide block is provided with a hollow groove, the side wall of the scraper sliding sleeve is provided with a transverse pin, and the transverse pin is clamped into the hollow groove.

[0054] The transverse pin is inserted into the side wall of the scraper sliding sleeve and can slide in the hollow groove, and the hollow groove limits the transverse pin so that the scraper sliding sleeve can be slightly expanded and contracted to prevent the scraper sliding sleeve from coming out of the guide block.

[0055] Under the action of the spring holding force, the outer side of the inner scraper abuts against the inner wall of the oil pipe, the inner scraper can float to avoid rigid contact and damage the inner wall, not only can the oil dirt on the inner wall be hung out, but also the inner scraper can play a role in stopping the dry ice cleaning liquid, when the oil pipe moves to the right end, the dry ice cleaning liquid and the grease mixed liquid are blocked by the inner scraper and move to the right end, and when the oil pipe moves to the right end, the dry ice cleaning liquid and the grease mixed liquid are discharged from the left end of the oil pipe.

[0056] The inner scraper can be replaced and matched with different specifications according to oil pipes with different diameters.

[0057] The sleeve ring is provided with a plurality of guide bases in the circumferential direction, the guide bases are provided with wheel frames, the end of the wheel frame is provided with a rotatable abutting wheel, and the abutting wheel rolls against the inner wall of the oil pipe.

[0058] The rotation axis of the abutting wheel is perpendicular to the central axis of the oil pipe.

[0059] Because the overhanging shaft has a long cantilever, in the initial stage, the traction wheel under the overhanging shaft needs to be jacked up and hold the overhanging shaft when the overhanging shaft is close to the cleaning station, until the oil pipe moves to the right and is connected at the inner support device, at this time, the left end of the overhanging shaft has a support, and the traction wheel can be lowered to the height of lifting the oil pipe.

[0060] The outer wall of the connecting segment close to the inner cleaning device is provided with a convex ring part, ceramic sealing sleeves are sleeved on both sides of the convex ring part, the port of the communication pipe part is provided with a sink structure, the ceramic sealing sleeve is sleeved into the sink structure, and the port of the communication pipe part is also provided with a stop end sleeve abutting against the ceramic sealing sleeve.

[0061] The stop end sleeve is threadedly connected with the outer wall of the communication pipe part and extends into the communication pipe part, thereby forming a stop for the ceramic sealing sleeve but without pressing the ceramic sealing sleeve. The ceramic sealing sleeve has the characteristics of wear resistance and low friction coefficient and has good dynamic sealing properties.

[0062] The cleaning liquid inlet pipe of the connecting segment can be arranged at the side wall of the inner baffle device away from the inner cleaning device. The dry ice cleaning liquid with pressure is introduced into the communication pipe part through the cleaning liquid inlet pipe, the cleaning liquid is sprayed from the inner nozzle to the inside of the oil pipe, at the same time, due to the existence of the radial lengthening pipe and the jetting force of the inner nozzle, the inner cleaning device has a rotary torque, the greater the jet pressure and the jet velocity, the faster the rotation speed of the inner cleaning device. The inner cleaning device rotates while cleaning the inner wall of the oil pipe, avoiding the dead angle of jetting.

[0063] However, because the cleaning liquid inlet pipe must protrude from the overhanging shaft, the cleaning liquid inlet pipe must be reserved with sufficient length to ensure that the oil pipe can move to the rightmost end, and the compactness of the designed device is not good. When the cleaning liquid inlet pipe introduces the cleaning liquid, the pressure may make the middle section of the cleaning liquid inlet pipe swing, which may interfere with the feeding of the oil pipe.

[0064] The inner nozzle is inclined to the side of the inner cleaning device close to the connecting segment, the overhanging shaft comprises a central pipe, the central pipe is communicated with the connecting segment, the cleaning liquid inlet pipe is arranged on the side wall of the central pipe close to the end support device, an outer pipe is sleeved outside the central pipe, a clamping cavity is arranged between the central pipe and the outer pipe, a front supporting sleeve and a rear supporting sleeve are arranged at both ends of the clamping cavity, a plurality of liquid discharge holes are arranged in the circumferential direction of the front supporting sleeve, a sealing ring is arranged at the end of the rear supporting sleeve away from the clamping cavity, the inner wall of the sealing ring is sleeved on the central pipe, and a mixed liquid discharge pipe is arranged on the side wall of the rear supporting sleeve.

[0065] The front supporting sleeve is provided with an inner sleeve body and an outer sleeve body arranged concentrically, and a plurality of supporting strips are arranged circumferentially between the inner sleeve body and the outer sleeve body, which separate the space of the inner sleeve body and the outer sleeve body into a plurality of liquid discharge holes.

[0066] The inner baffle device and the inner supporting device are sleeved on the outer wall of the outer layer pipe. Because the clamping cavity and the mixed liquid discharge pipe are arranged, the accumulated mixed liquid after cleaning does not need to be discharged from the left end of the oil pipe, thereby avoiding that the excessive mixed liquid during cleaning causes excessive resistance to feeding.

[0067] The dry ice cleaning liquid is introduced into the central pipe through the liquid pump from the cleaning liquid inlet pipe and enters the communication pipe part through the connecting segment, and the inner nozzle sprays the dry ice cleaning liquid obliquely to the feeding direction of the oil pipe, thereby avoiding that the low-temperature cleaning liquid flows along the inner wall of the oil pipe to the vicinity of the electromagnetic heating device, causing the oil pipe to be difficult to be heated. Moreover, after flushing the oil dirt, the mixed liquid is flushed into the front supporting sleeve, the mixed liquid discharge pipe is connected to the liquid pump, the accumulated mixed liquid is sucked into the clamping cavity from the liquid discharge hole, and finally is sucked away by the mixed liquid discharge pipe.

[0068] The central pipe is made of heat insulation material, and on this basis, because the oil pipe is heated in segments and the specific heat capacity of metal is not large, after being cooled by a large amount of dry ice cleaning liquid, the temperature of the backflow mixed liquid is still lower than that of the outside, so a low-temperature insulation layer is formed outside the central pipe, further preventing the temperature of the dry ice cleaning liquid in the central pipe from dissipating. Therefore, even if the length of the central pipe is relatively long and the liquid is introduced from the far end, the temperature will not be lost too much.

[0069] The inner cleaning device is provided with a supporting arm at one end close to the connecting segment, and is also provided with a swing lever, the middle part of the swing lever is hinged to the supporting arm, the two ends of the swing lever are respectively provided with a swing ball and a contact piece, and the end part of the inner cleaning device is provided with a magnetic block, the magnetic block adsorbs the swing ball, the inner cleaning device rotates to make the swing ball separate from the magnetic block, and the swing lever swings to make the contact piece contact the outer wall of the connecting segment.

[0070] The end face of the stop end sleeve is provided with a plurality of supporting arms in the circumferential direction, and each supporting arm is provided with a swing lever. When the inner cleaning device is stationary, the swing ball is adsorbed on the magnetic block due to the adsorption force of the magnetic block, at this time, the contact piece separates from the outer wall of the connecting segment. When the rotating speed of the inner cleaning device reaches a certain degree, the swing ball separates from the magnetic block under the action of centrifugal force, so that the contact piece at the other end of the swing lever is pressed on the connecting segment, a friction force is formed, the rotation of the inner cleaning device is inhibited, and the speed reduction of the inner cleaning device is realized.

[0071] In order to avoid frequent rapid acceleration and rapid deceleration of the inner cleaning device, the contact piece can be a reed with a certain elasticity, as the rotating speed of the inner cleaning device increases, the contact pressure will gradually increase, the friction resistance can be gradually increased, and the speed of the inner cleaning device can be gradually stabilized at a value. Avoiding that the rotating speed of the inner cleaning device is too fast, affecting the jet flushing effect.

[0072] The contact piece is fixed to the end of the swing lever by a bayonet, and is easy to replace when worn. A wear-resistant coating or ring can be sprayed on the outer wall of the joint section and the contact piece release area.

[0073] The outer nozzle is directed away from the electromagnetic heating device.

[0074] The outer cleaning device has an annular body with an inlet, and the outer nozzle is arranged thereon. The jet sprayed by the outer nozzle is directed away from the side of the electromagnetic heating device, avoiding interference with the electromagnetic heating device when heating the oil pipe.

[0075] A threaded adjusting sleeve is arranged on the outer side of the communication pipe part, and a connecting ring is further sleeved on the outer side of the adjusting sleeve. The connecting ring can rotate relative to the adjusting sleeve, and a scraper rod is further arranged. Hinged gas springs are arranged at both ends of the scraper rod, and each gas spring is hinged to the connecting ring. A first connecting rod is further hinged to one end of the scraper rod, and the first connecting rod is hinged to the nozzle part.

[0076] The gas springs at both ends of the scraper rod can be different. An annular groove is arranged on the outer wall of the adjusting sleeve, and a jackscrew is arranged on the connecting ring. The jackscrew is inserted into the annular groove through the connecting ring. The posture and position of the scraper rod can be adjusted by rotating the adjusting sleeve to make the scraper rod close to the inner wall of the oil pipe. When the inner cleaning device rotates, the scraper rod can rotate and scatter part of the oil dirt, reducing the scraping pressure of the inner baffle device.

[0077] The beneficial effects of the present application are: the oil pipe is sent to different workstations for automatic cleaning and flaw detection by the cooperation of the turnover frame and the jacking traction unit, reducing the labor intensity; The working mode of twice flaw detection before and after cleaning not only can detect the part blocked by oil dirt, but also can avoid damage to the oil pipe during the cleaning process; A plurality of flaw detection assemblies are arranged in a surrounding manner in the circumferential direction, so that the oil pipe ensures that there is no detection dead angle in the circumferential direction of the inner and outer walls. The telescopic rod structure is used in cooperation with the moving table to realize a two-stage telescopic effect. The long stroke of the detection rod group can realize the flaw detection of the full length of the oil pipe from one side without affecting the movement of the oil pipe to the next workstation. The cleaning nozzle is arranged at the front end of the center detection rod group to avoid the oil dirt in the pipe from adhering to the detection head and affecting the detection effect. The detection rod group adopts a hollow structure, and the cleaning pipeline and the remaining lines can be led out to the tail end from the inside to avoid direct contact with the inner wall of the oil pipe and damage to the oil pipe or the cleaning pipeline. Part of the oil dirt is softened by high-temperature heating, and then is separated from the pipe wall interface by rapid cooling, so that the oil dirt and the pipe wall interface are separated, and good cleaning effect is achieved. The external cleaning nozzle is densely arranged, and as the oil pipe is moved by traction, the outer wall is cleaned in all directions without dead angle. The internal cleaning mechanism can rotate by using the jet recoil force, which not only reduces the complexity requirement of the mechanism itself, but also can perform spiral flushing on the inner wall of the oil pipe to avoid oil dirt residue. The oil dirt is dispersed in advance by the scraping blade rod of the inner cleaning device, and the residual oil dirt adhered to the inner wall of the oil pipe is scraped by the inner scraping plate at the rear end, so that the stubborn oil dirt is cleaned layer by layer and step by step; The end supporting device adopts double-jacket pipe, the inner pipe is used for liquid inlet and the outer pipe is used for liquid outlet, the inner nozzle and the outer nozzle are directed to the feeding direction of the oil pipe for spraying, guiding the mixed liquid after cleaning to flow out of the double-jacket pipe cavity far away from the electromagnetic heating device, and meanwhile, the cleaning liquid on the inner side is kept warm to reduce temperature dissipation; The centrifugal speed limiting device is arranged at the end of the inner cleaning device, the friction resistance can be adjusted according to the rotating speed, so that the self-rotation of the inner cleaning device is kept constant, the cleaning effect is prevented from being reduced due to high-speed rotation, and the abrasion is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0078] The application will be further described below in combination with the drawings and examples.

[0079] Figure 1 is the arrangement schematic diagram of the application.

[0080] Figure 2 is the schematic diagram of the detection device.

[0081] Figure 3 is the structure diagram of the other side of the detection device.

[0082] Figure 4 is the sectional view of the mobile station.

[0083] Figure 5 is the internal structure diagram of the mobile station.

[0084] Figure 6 is the exploded view of the tail end of the central probe rod assembly.

[0085] Figure 7 is the sectional view and enlarged view of the central and outer probe rod assemblies.

[0086] Figure 8 is the structure diagram of the front end of the probe rod assembly.

[0087] Figure 9 is the exploded view of the front end of the probe rod assembly.

[0088] Figure 10 is the device diagram of the detection station and the station to be cleaned.

[0089] Figure 11 is the schematic diagram of the turnover frame.

[0090] Figure 12 is the overall diagram of the cleaning system.

[0091] Figure 13 is the side schematic diagram of the cleaning system.

[0092] Figure 14 is the structure diagram of the cleaning station.

[0093] Figure 15 is the structure diagram of the jacking traction unit.

[0094] Figure 16 is the structure diagram of the inner support device and the inner baffle device.

[0095] Figure 17 is the sectional view of the inner baffle device.

[0096] Figure 18 is the schematic diagram of the outer scraper device.

[0097] Figure 19 is the structure diagram of the transverse limiting mechanism.

[0098] Figure 20 is the structure diagram of the inner cleaning device.

[0099] Figure 21 is the sectional view of the inner cleaning device.

[0100] Figure 22 is the schematic diagram of the inner cleaning device to the rear end cleaning liquid inlet pipe.

[0101] Figure 23 is the schematic diagram of the forward feeding to the cleaning layout.

[0102] Figure 24 is the schematic diagram of the inner cleaning device forward feeding to the spray.

[0103] Figure 25 is the schematic diagram of the centrifugal speed limiting mechanism arrangement.

[0104] Figure 26 is the schematic diagram of the double clamping cavity structure.

[0105] Figure 27 is the schematic diagram of the front support sleeve end side.

[0106] In the figure: electromagnetic heating device 1; cleaning station 2; cleaning box 201; maintenance door 202; inner chamber 203; upper cover 204; passage hole 205; terminal support device 3; overhanging shaft 301; link segment 302; convex ring part 303; ceramic sealing sleeve 304; outer layer pipe 305; center pipe 306; clamping cavity 307; front support sleeve 308; liquid discharge hole 309; rear support sleeve 310; sealing ring 311; support strip 312; inner sleeve body 313; outer sleeve body 314; jacking traction unit 4; traction wheel 401; undercarriage body 402; guide rail sliding block mechanism 403; jacking cylinder 404; traction wheel frame 405; bearing seat 406; speed reducer motor 407; transverse limiting mechanism 5; stand 501; transverse moving frame 502; rolling wheel 503; linear jacking cylinder 504; transverse moving guide rail mechanism 505; oil pipe 6; outer cleaning device 7; outer nozzle 701; liquid inlet 702; inner cleaning device 8; inner nozzle 801; radially lengthened pipe 802; communication pipe part 803; spray head part 804; scraper bar 805; connecting ring 806; adjusting sleeve 807; first connecting rod 808; gas spring 809; stop end sleeve 810; support arm 811; inner baffle device 9; inner scraper 901; scraper sliding sleeve 902; spring 903; cross pin 904; inner support device 10; sleeve ring 1001; guide block 1002; guide base 1003; wheel frame 1004; abutting wheel 1005; hollow groove 1006; outer scraper device 11; outer scraper 1101; cleaning liquid inlet pipe 12; mixed liquid discharge pipe 13; swing lever 14; swing ball 15; magnetic block 16; contact sheet 17; detection device 18; fixed base 1801; tail support 1802; moving table 1803; center protruding lever group 1804; outer side protruding lever group 1805; first detection assembly 1806; second detection assembly 1807; detection head 1808; cavity part 1809; partition layer plate 1810; rotating base plate 1811; drive flange shaft 1812; driven flange shaft 1813; first flange pipe sleeve 1814; second flange pipe sleeve 1815; first central gear 1816; first driven gear 1817; second central gear 1818; second driven gear 1819; main drive gear 1820; first drive motor 1821; inner sleeve base 1822; long lead screw 1823; nut 1824; guide rail sliding block assembly 1825; sleeve lever guide sleeve 1826; transmission ring 1827; second drive motor 1828; transmission wheel 1829; middle sleeve lever 19; outer sleeve lever 1901; inner screw 1902; strip-shaped guide protrusion 1903; sliding guide sleeve 1904; strip-shaped groove 1905; screw sleeve 1906; first support bushing 1907; second support bushing 1908; end face through hole 1909; plugging head 1910; hollow link sleeve 1911; central passage part 1912; shunt hole 1913; through hole 1914; cleaning spray nozzle 1915; coiled hose 1916; link pipeline 1917; detection station 20; to-be-cleaned station 21; first turnover frame 22;Second turnover frame 2201; first interface frame 2202; second interface frame 2203; base frame 2204; concave frame 2205; hinged seat 2206; buffer 2207; turnover cylinder 2208; lower line conveyor 23. DETAILED DESCRIPTION

[0107] As Figures 1-27 In the oil pipe body flaw detection and cleaning system, a detection station 20 and a cleaning station 21 are arranged side by side, a plurality of turnover frames are arranged between the detection station 20 and the cleaning station 21, a detection device 18 and a lower line conveyor 23 are arranged at both ends of the detection station 20, a movable moving table 1803 is arranged on a fixed base 1801, a center probe rod group 1804 and a plurality of outer probe rod groups 1805 are arranged at one end of the moving table 1803, an electromagnetic heating device 1 and a cleaning station 2 are arranged at one end of the cleaning station 21, a plurality of spaced-apart jacking traction units 4 are arranged along a straight line at the detection station 20 and the cleaning station 21, and the jacking traction unit 4 comprises a liftable traction wheel 401 which is arranged to rotate against the lower end of the oil pipe 6 to move the oil pipe 6 along the length direction.

[0108] In the preferred scheme, a tail support 1802 is arranged at one end of the fixed base 1801, the plurality of outer probe rod groups 1805 are arranged on the outer side of the center probe rod group 1804 in a circumferential direction, the center probe rod group 1804 and the outer probe rod group 1805 are slidably connected to the tail support 1802, a plurality of first detection assemblies 1806 which are directed towards the inner wall of the oil pipe 6 are arranged at the end of the center probe rod group 1804 in a circumferential direction, a plurality of second detection assemblies 1807 which are directed towards the outer wall of the oil pipe 6 are arranged on each outer probe rod group 1805, the center probe rod group 1804 and the outer probe rod group 1805 each comprise an inner screw rod 1902, a middle sleeve rod 19 and an outer sleeve rod 1901 which are sequentially connected, the first detection assembly 1806 or the second detection assembly 1807 is connected to the end of the middle sleeve rod 19, the middle sleeve rod 19 is slidably connected to the outer sleeve rod 1901, the middle sleeve rod 19 is threadedly connected to the inner screw rod 1902, the outer sleeve rod 1901 moves synchronously with the moving table 1803, and the inner screw rod 1902 rotates to make the middle sleeve rod 19 extend out of the outer sleeve rod 1901.

[0109] The moving table 1803 moves and drives the center probe rod group 1804 and the outer probe rod group 1805 to move to one side, in this process, the inner screw rod 1902 rotates to make each middle sleeve rod 19 extend out of the center probe rod group 1804 and the outer probe rod group 1805, and drive the first detection assembly 1806 and the second detection assembly 1807 to detect the flaw along the length direction of the oil pipe 6. The two-stage telescopic structure satisfies the longer oil pipe 6, the total length of the fixed base 1801 does not need to be too long, and the floor space is reduced.

[0110] The detection assembly can integrate a camera, a light supplement lamp and an ultrasonic probe.

[0111] When the detection device 18 detects the oil pipe 6, if it is found that the degree of fouling of the oil pipe is low and does not need to be cleaned, it is directly discharged from the downline conveyor belt 23.

[0112] In the preferred embodiment, the outer sleeve rod 1901 is provided with a sliding guide sleeve 1904 at the front end, the inner wall of the sliding guide sleeve 1904 is provided with a plurality of strip-shaped grooves 1905 in the circumferential direction, the outer wall of the middle sleeve rod 19 is provided with a plurality of strip-shaped guide protrusions 1903 in the circumferential direction, each strip-shaped guide protrusion 1903 is clamped in each strip-shaped groove 1905 and slides, the inner wall of the middle sleeve rod 19 is provided with a threaded sleeve 1906, the outer wall of the inner screw rod 1902 is threadedly connected with the threaded sleeve 1906; the outer wall of the front end of the detection device 18 is sleeved with a first supporting bushing 1907, the outer wall of the first supporting bushing 1907 abuts against the inner wall of the middle sleeve rod 19, the outer wall of the tail end of the middle sleeve rod 19 is sleeved with a second supporting bushing 1908, and the outer wall of the second supporting bushing 1908 abuts against the inner wall of the outer sleeve rod 1901.

[0113] The sliding guide sleeve 1904 plays a role in preventing the rotation of the middle sleeve rod 19 and allows the middle sleeve rod 19 to move forward and backward.

[0114] Since the middle sleeve rod 19 is too long, it is difficult to process the internal thread, so a threaded sleeve 1906 with an internal thread is used at the tail end of the middle sleeve rod 19 to cooperate with the inner screw rod 1902, the threaded sleeve 1906 is fixedly integrated with the end of the middle sleeve rod 19 and moves synchronously.

[0115] The first supporting bushing 1907 and the second supporting bushing 1908 can be made of ceramic or Teflon material, which has a small friction coefficient and good wear resistance.

[0116] The first supporting bushing 1907 is fixedly integrated with the detection device 18, and the second supporting bushing 1908 is fixedly integrated with the middle sleeve rod 19. Since the outer sleeve rod 1901 and the inner screw rod 1902 do not protrude forward, when the middle sleeve rod 19 protrudes forward, the tail end is supported on the inner wall of the outer sleeve rod 1901 through the second supporting bushing 1908, the front end of the inner screw rod 1902 always supports the front end after retraction or the middle segment after extension of the middle sleeve rod 19, forming two-point support, which makes the movement of the middle sleeve rod 19 more stable and reliable.

[0117] Since most of the inner and outer walls of the middle sleeve rod 19 are in a non-contact state with the outer sleeve rod 1901 or the inner screw rod 1902, friction resistance is avoided, which can cause the middle sleeve rod 19 to be stuck. Only key parts such as the sliding guide sleeve 1904, the first supporting bushing 1907, the second supporting bushing 1908, and the threaded sleeve 1906 are in contact, so only the machining precision of these parts needs to be improved to ensure smooth sliding of the middle sleeve rod 19.

[0118] Due to the accumulation of oil dirt on the inner wall of the oil pipe 6, the first detection assembly 1806 at the front end of the center probe rod group 1804 may be covered by the oil dirt when the center probe rod group 1804 is deeply inserted, which affects the detection.

[0119] Due to the limited diameter of the oil pipe 6, if the cleaning water source pipe is external, that is, in the interlayer space of the first detection assembly 1806 and the oil pipe 6, it may cause pipe rubbing or extrusion. Since the detection head 1808 is multiple, multiple pipes may also be entangled with each other.

[0120] In the preferred scheme, the first detection assembly 1806 is provided with multiple detection heads 1808 and cleaning spray nozzles 1915 facing the detection heads 1808 in the circumferential direction. The middle sleeve rod 19 and the inner screw rod 1902 are hollow structures. The front end of the middle sleeve rod 19 is provided with an end face through hole 1909. The end face through hole 1909 is provided with a plug head 1910. The plug head 1910 is provided with a central passage part 1912 with one end communicating with the end face through hole 1909. The side wall of the central passage part 1912 is provided with multiple shunt holes 1913 in the circumferential direction. Each shunt hole 1913 is communicated with the cleaning spray nozzle 1915 through the adapter pipe 1917. The hollow structure of the middle sleeve rod 19 and the inner screw rod 1902 is provided with a spiral hose 1916. The front end of the spiral hose 1916 communicates with the central passage part 1912. The rear end of the spiral hose 1916 penetrates out of the rear end of the inner screw rod 1902.

[0121] The cleaning spray nozzle 1915 is communicated with the cleaning water source. The cleaning spray nozzle 1915 is installed on the rear end flange structure of the first detection assembly 1806.

[0122] The rear end of the spiral hose 1916 is communicated with the cleaning water source. The spiral structure enables the spiral hose 1916 to be self-adaptively lengthened when the middle sleeve rod 19 is stretched out. The inner screw rod 1902 and the cleaning station 2 can be used as a protective sleeve outside the spiral hose 1916 to prevent the spiral hose 1916 from being exposed and damaged. The water source is divided into multiple paths through the plug head 1910, and each detection head 1808 is cleaned. The remaining wires and pipes can be connected to the rear end from the hollow structure in the same way.

[0123] The front end of the middle sleeve rod 19 is provided with a threaded hollow adapter sleeve 1911. The hollow adapter sleeve 1911 is arranged outside the plug head 1910. The first detection assembly 1806 is threadedly connected with the hollow adapter sleeve 1911. The hollow adapter sleeve 1911 is provided with multiple through holes 1914 in the circumferential direction. The adapter pipe 1917 penetrates through the through hole 1914.

[0124] The hollow adapter sleeve 1911 is hollow, used to connect the front end of the middle sleeve rod 19 and the first detection assembly 1806. In order to avoid the adapter pipe 1917, the through hole 1914 needs to be opened in the side wall.

[0125] In the preferred embodiment, the mobile station 1803 is provided with a cavity 1809, and the cavity 1809 is provided with an inner sleeve 1822. The inner sleeve 1822 is provided with a rotatable driving flange shaft 1812 and a plurality of driven flange shafts 1813. The driven flange shafts 1813 are arranged circumferentially outside the driving flange shaft 1812. The driving flange shaft 1812 is provided with a first central gear 1816. The driven flange shafts 1813 are provided with a first driven gear 1817. Each first driven gear 1817 is engaged with the first central gear 1816. The center protruding rod group 1804 and the outer protruding rod group 1805 are provided with a first flange tube sleeve 1814 at the rear end. One end of the first flange tube sleeve 1814 is sleeved with an internal screw 1902. The other end of the first flange tube sleeve 1814 is connected with the driving flange shaft 1812 or the driven flange shaft 1813. The inner sleeve 1822 is further provided with a partition plate 1810 at the front end. Each outer sleeve rod 1901 is provided with a hollow second flange tube sleeve 1815 at the tail end. The second flange tube sleeve 1815 is connected with the partition plate 1810.

[0126] The internal screw 1902 passes through the second flange tube sleeve 1815 and the partition plate 1810 to be sleeved with the first flange tube sleeve 1814.

[0127] When the driving flange shaft 1812 rotates, the first central gear 1816 drives the surrounding first driven gear 1817 to rotate, so that each internal screw 1902 rotates synchronously.

[0128] The driving flange shaft 1812 is in the center, and the first flange tube sleeve 1814 connected therewith is also a hollow structure, which facilitates the spiral hose 1916 to pass out from the tail.

[0129] In the preferred embodiment, the mobile station 1803 is provided with a second central gear 1818 and a second driven gear 1819 at the rear end. The mobile station 1803 is provided with a first driving motor 1821 at one side end. The first driving motor 1821 is provided with a main drive gear 1820 at the shaft end. The main drive gear 1820 is engaged with the second central gear 1818. The second driven gear 1819 is sleeved with the driving flange shaft 1812.

[0130] The first driving motor 1821 drives the main drive gear 1820 to rotate, which drives the second central gear 1818 and the second driven gear 1819 to rotate in turn, so as to drive the driving flange shaft 1812 to rotate.

[0131] In the preferred embodiment, the fixed base 1801 is provided with a long screw rod 1823 and a guide rail sliding block assembly 1825. The mobile station 1803 is provided with a rotatable nut 1824 at the lower end. The nut 1824 is sleeved with the guide rail sliding block assembly 1825. The mobile station 1803 is slidably connected with the fixed base 1801 through the guide rail sliding block assembly 1825. The second central gear 1818 is sleeved with the nut 1824.

[0132] The second central gear 1818 rotates synchronously with the nut 1824, drives the center probe rod set 1804 and the outer probe rod set 1805 to extend, and drives the moving table 1803 to move to the front end, so that the moving table 1803, the center probe rod set 1804 and the outer probe rod set 1805 can be driven to move synchronously by a single motor, the number of components related to driving is reduced, and the cost is saved. When the moving table 1803 moves to the front end, the middle sleeve rod 19 of the center probe rod set 1804 and the outer probe rod set 1805 also extends to the front end. When the moving table 1803 returns to the tail end, the middle sleeve rod 19 also returns to the tail end at the same time.

[0133] In order to save the hardware cost and reduce the control difficulty, the number of probes is not too large, the area of the oil pipe 6 directly opposite to the probes is close, and the scanning accuracy is high. However, the oil pipe 6 is far away from the two probes at the position of the middle line between the two adjacent probes, and the distance is at an oblique angle, so the detection accuracy is low.

[0134] The tail support 1802 and the moving table 1803 are provided with rotatable rotating seat plates 1811, the rotating seat plates 1811 are provided with a plurality of sleeve rod guide sleeves 1826, the sleeve rod guide sleeves 1826 are sleeved with the outer sleeve rods 1901, the rotating seat plates 1811 can synchronously rotate with the inner sleeve seat 1822, the rotating seat plates 1811 are sleeved with a transmission ring 1827 outside, one side end of the moving table 1803 is also provided with a second driving motor 1828, the shaft end of the second driving motor 1828 is sleeved with a transmission wheel 1829, and the transmission wheel 1829 is in transmission with the transmission ring 1827.

[0135] The transmission ring 1827 and the transmission wheel 1829 can be a gear or a friction wheel.

[0136] When the moving table 1803 moves forward, the second driving motor 1828 is in a non-working state. When the moving table 1803 reaches the front end, it means that the entire oil pipe 6 is scanned once. The second driving motor 1828 drives the transmission wheel 1829 to rotate, so that the transmission ring 1827 drives the rotating seat plate 1811 and the inner sleeve seat 1822 to rotate by a certain angle. Taking the center probe rod set 1804 with three probe heads 1808 as an example, the circumferential angle of each probe head 1808 is 120 degrees, so the rotating seat plate 1811 and the inner sleeve seat 1822 need to be rotated by 60 degrees. Then the moving table 1803 returns, at this time, the probes switch the circumferential position, and the oil pipe 6 is scanned again at the weak scanning position, so that the overall detection accuracy is improved.

[0137] After the moving table 1803 returns, the circumferential angle of the rotating seat plate 1811 and the inner sleeve seat 1822 also returns, and there is no risk of winding.

[0138] When the first driving motor 1821 is clamped, the second driven gear 1819, the driving flange shaft 1812 and the first central gear 1816 do not rotate, while the rotating seat plate 1811 and the inner sleeve seat 1822 rotate, so that the first driven gear 1817 will rotate a certain angle relative to the first central gear 1816, the oil pipe 6 of the outer side probe rod group 1805 will be extended or shortened by a small section, the distance is shorter, and within the working stroke redundancy range, it does not affect the detection effect.

[0139] In the preferred scheme, the turnover frame includes a first turnover frame 22 and a second turnover frame 2201, the first connection frame 2202 and a plurality of linearly spaced first turnover frames 22 are arranged at the detection station 20, the second connection frame 2203 and a plurality of linearly spaced second turnover frames 2201 are arranged at the cleaning station 21, the first turnover frame 22 and the second turnover frame 2201 each include a base frame 2204 and a concave frame 2205, the base frame 2204 is provided with a hinge seat 2206 at the upper end, the concave frame 2205 is rotationally connected with the hinge seat 2206 at the middle part, the base frame 2204 is provided with a buffer 2207 at one end, and the base frame 2204 is further provided with a turnover cylinder 2208, one end of the concave frame 2205 is connected with the cylinder rod end of the turnover cylinder 2208, and the other end of the concave frame 2205 abuts against the buffer 2207.

[0140] After the detection device 18 completes the detection, the concave frames 2205 of the first turnover frames 22 are synchronously inclined, the oil pipe 6 rolls out of the notch and falls to the V-shaped structure of the second connection frame 2203 at the cleaning station 21, and is just stationary above the traction wheel 401 under the guidance of the V-shaped structure of the second connection frame 2203. The traction wheel 401 at the cleaning station 21 is jacked up and rotated to send the oil pipe 6 to the electromagnetic heating device 1 and the cleaning station 2 for cleaning. After cleaning, the traction wheel 401 is turned over to move the oil pipe 6 back to the cleaning station 21, the concave frame 2205 of the second turnover frame 2201 at the cleaning station 21 is inclined, the oil pipe 6 rolls into the V-shaped structure of the first connection frame 2202, the center probe rod group 1804 and the outer side probe rod group 1805 of the detection device 18 are extended, and secondary detection is performed. If there is no damage, the traction wheel 401 jacks up the oil pipe 6 to send it to the offline conveying belt 23.

[0141] The offline conveying belt 23 is a conveying belt with a V-shaped roller.

[0142] In the preferred scheme, the cleaning station 2 is provided with an end support device 3 on the side away from the electromagnetic heating device 1, the end support device 3 is provided with an overhanging shaft 301 on the side close to the cleaning station 2, the end of the overhanging shaft 301 is arranged at the cleaning station 2, the cleaning station 2 is provided with a cleaning box body 201, the cleaning box body 201 is provided with an inner chamber 203, both ends of the inner chamber 203 are provided with passage holes 205, the inner chamber 203 is provided with an outer cleaning device 7 and an inner cleaning device 8, the end of the overhanging shaft 301 is connected with the inner cleaning device 8, the inner cleaning device 8 is provided with inner nozzles 801 arranged in a circle, the outer cleaning device 7 is provided with outer nozzles 701 arranged in a circle, the oil pipe 6 passes through the electromagnetic heating device 1 and the passage holes 205 and is sleeved outside the overhanging shaft 301, the inner cleaning device 8 and the outer cleaning device 7 clean the inner wall and the outer wall of the oil pipe 6 respectively, and a plurality of jacking traction units 4 arranged in a straight line and at intervals are further arranged below the oil pipe 6.

[0143] The inner nozzles 801 are eccentric nozzles, a large external space can be arranged in a circle, a plurality of nozzles can be arranged in a circle, and the oil pipe 6 can be sprayed from all directions without dead angle.

[0144] The traction wheel 401 is a V-shaped wheel, which can be lifted to lift the oil pipe 6 below, a plurality of jacking traction units 4 are arranged on both sides of the electromagnetic heating device 1, the traction wheel 401 rotates to make the oil pipe 6 advance to the right side of the way, pass through the electromagnetic heating device 1, and the electromagnetic heating device 1 uses an electromagnetic coil to perform segmented high-frequency heating on the oil pipe 6, so that part of the oil dirt is softened, after the heating is completed, the oil pipe 6 moves in the direction of the end support device 3 under the traction of the jacking traction unit 4, gradually passes through the hollow area in the center of the inner baffle device 9, and is sleeved outside the inner baffle device 9. The outer nozzles 701 and the inner nozzles 801 spray dry ice cleaning liquid to the outer wall and the inner wall of the oil pipe 6, the heated section of the oil pipe 6 is rapidly cooled, because the thermal expansion coefficients of the oil dirt and the oil pipe are different, and under the action of the impact force, the oil dirt is separated from the wall of the oil pipe.

[0145] The jacking traction unit 4 comprises a base frame body 402, the base frame body 402 is provided with a liftable traction wheel frame 405, a bearing seat 406 is arranged on the traction wheel frame 405, and a speed reduction motor 407 is arranged on one side of the traction wheel 401.

[0146] The base frame body 402 is provided with a guide rail sliding block mechanism 403 and a jacking cylinder 404, the traction wheel frame 405 is slidably connected with the base frame body 402 through the guide rail sliding block mechanism 403, and the jacking cylinder 404 jacks the traction wheel frame 405.

[0147] The traction wheel frame 405 is provided with two bearing seats 406, the both ends of a rotating shaft of the traction wheel frame 405 are sleeved on the bearing seats 406, and the shaft end of the speed reduction motor 407 is connected with the rotating shaft.

[0148] The cleaning station 2 is also provided with a lateral limiting mechanism 5 on both sides, which comprises a vertical frame 501, two lateral moving frames 502 movably arranged on the vertical frame 501, and rolling wheels 503 rotatably arranged on the lateral moving frames 502.

[0149] The vertical frame 501 is provided with a lateral beam, on which a lateral moving guide rail mechanism 505 is arranged, the lower end of the lateral moving frame 502 is connected with the lateral moving guide rail mechanism 505, the lateral beam is provided with a few-shaped lifting seat, and a linear lifting cylinder 504 is arranged on the lateral beam to drive the lateral moving of the lateral moving frame 502. The rolling wheels 503 are V-shaped wheels, and the two rolling wheels 503 are centered and clamped to just contact the outer wall of the oil pipe 6, but do not hinder the movement of the oil pipe 6.

[0150] The linear lifting cylinder 504 and the lifting cylinder 404 can be servo cylinders.

[0151] The lower end of the cleaning box 201 is provided with a maintenance door 202 that can be slid upward, so that the accumulated oil dirt and cleaning liquid can be cleaned, and the cleaning box 201 is also provided with an upper cover 204 that can be opened.

[0152] The cleaning box 201 confines the liquid sprayed by the outer cleaning device 7 in the inner chamber 203, only leaving a passage hole 205 for the oil pipe 6 to pass through, so as to avoid too much cleaning liquid from splashing near the electromagnetic heating device 1 and reduce the temperature of the heating section of the oil pipe 6.

[0153] In the preferred scheme, the outer extension shaft 301 is also provided with an inner baffle device 9 near the inner cleaning device 8, the inner baffle device 9 comprises a plurality of inner scraping plates 901 arranged in a circumferential direction, the outer side of the inner scraping plate 901 abuts against the inner wall of the oil pipe 6, the cleaning station 2 is also provided with an outer scraping device 11, the outer scraping device 11 comprises a plurality of outer scraping blades 1101 arranged in a circumferential direction, the outer scraping blade 1101 abuts against the outer wall of the oil pipe 6, the end of the outer extension shaft 301 is provided with a connecting segment 302, the inner cleaning device 8 is rotatably connected with the connecting segment 302, the inner cleaning device 8 comprises a communication pipe part 803 and a nozzle part 804, the communication pipe part 803 is connected with the connecting segment 302, the nozzle part 804 is provided with a plurality of radial extension pipes 802 in a circumferential direction, and an inner nozzle 801 is arranged at the end of the radial extension pipe 802, the spray axis of the inner nozzle 801 is arranged in a different plane from the rotation axis of the inner cleaning device 8, and the spray recoil force of the inner nozzle 801 drives the rotation of the inner cleaning device 8.

[0154] The outer scraping device 11 adopts a multi-leaf structure similar to a camera aperture, and the retraction degree of the outer scraping blade 1101 can be controlled by a lever.

[0155] The inner scraper 901 is arranged in a circumferential overlap, the outer extension shaft 301 is sleeved with a sleeve ring 1001, the sleeve ring 1001 is provided with a plurality of guide blocks 1002 in the circumferential direction, the guide blocks 1002 are sleeved with a slidable scraper sliding sleeve 902, the scraper sliding sleeve 902 is connected with the side end of the inner scraper 901 away from the inner cleaning device 8, the end of the guide block 1002 is provided with a sink structure, the sink structure is provided with a spring 903, the end of the spring 903 abuts on the scraper sliding sleeve 902, the guide block 1002 is provided with a hollow groove 1006, the side wall of the scraper sliding sleeve 902 is provided with a cross pin 904, and the cross pin 904 is clamped into the hollow groove 1006.

[0156] The cross pin 904 is inserted into the side wall of the scraper sliding sleeve 902 and can slide in the hollow groove 1006. The hollow groove 1006 limits the cross pin 904 so that the scraper sliding sleeve 902 can be slightly expanded and contracted, preventing the scraper sliding sleeve 902 from coming out of the guide block 1002.

[0157] Under the action of the holding force of the spring 903, the outer side of the inner scraper 901 abuts on the inner wall of the oil pipe 6, and the inner scraper 901 can float to avoid rigid contact and damage the inner wall. Not only can it hang out the oil dirt on the inner wall, but also it can stop the dry ice cleaning liquid. When the oil pipe 6 moves to the right end, the dry ice cleaning liquid and the grease mixed liquid are discharged from the left end of the oil pipe 6.

[0158] The inner scraper 901 can be replaced according to different pipe diameters of the oil pipe 6.

[0159] The sleeve ring 1001 is provided with a plurality of guide bases 1003 in the circumferential direction, the guide bases 1003 are provided with wheel frames 1004, the end of the wheel frame 1004 is provided with a rotatable abutting wheel 1005, and the abutting wheel 1005 abuts on the inner wall of the oil pipe 6 and rolls.

[0160] The rotation axis of the abutting wheel 1005 is vertical to the central axis of the oil pipe 6.

[0161] Because the cantilever of the outer extension shaft 301 is long, in the initial stage, the traction wheel 401 under the outer extension shaft 301 needs to be jacked up and lifted to hold the outer extension shaft 301 until the oil pipe 6 moves to the right and is sleeved at the inner support device 10. At this time, the left end of the outer extension shaft 301 has support, and the traction wheel 401 can be lowered to the height that can lift the oil pipe 6.

[0162] The outer wall of the link segment 302 close to the one end of the inner cleaning device 8 is provided with a convex ring part 303, the ceramic sealing sleeve 304 is sleeved on both sides of the convex ring part 303, the port of the communication pipe part 803 is provided with a sink structure, the ceramic sealing sleeve 304 is sleeved into the sink structure, and the port of the communication pipe part 803 is also provided with a stop end sleeve 810 abutting on the ceramic sealing sleeve 304.

[0163] The stop end sleeve 810 is threadedly connected to the outer wall of the communication pipe section 803, and extends into the communication pipe section 803, and stops the ceramic sealing sleeve 304, but does not press it tightly. The ceramic sealing sleeve 304 has the characteristics of wear resistance and low friction coefficient, and has good dynamic sealing characteristics.

[0164] The cleaning liquid inlet pipe 12 is arranged at the side wall of the adapter section 302 on the side away from the inner cleaning device 8. The dry ice cleaning liquid is introduced into the communication pipe section 803 through the cleaning liquid inlet pipe 12, and is sprayed from the inner nozzle 801 to the inside of the oil pipe 6. Due to the presence of the radial extension pipe 802 and the jetting force of the inner nozzle 801, the inner cleaning device 8 has a rotating torque. The greater the pressure and the jetting speed, the faster the rotating speed of the inner cleaning device 8. The inner cleaning device 8 rotates while cleaning the inner wall of the oil pipe 6, avoiding dead angles.

[0165] However, since the cleaning liquid inlet pipe 12 must protrude from the outer shaft 301, the cleaning liquid inlet pipe 12 must be long enough to ensure that the oil pipe 6 can move to the rightmost end. This design is not compact. When the cleaning liquid inlet pipe 12 is introduced into the cleaning liquid, the pressure may cause the middle section of the cleaning liquid inlet pipe 12 to swing, which may interfere with the feeding of the oil pipe 6.

[0166] The inner nozzle 801 is inclined to the side of the inner cleaning device 8 close to the adapter section 302. The outer shaft 301 includes a central pipe 306, which communicates with the adapter section 302. The central pipe 306 is provided with a cleaning liquid inlet pipe 12 close to the side wall of the terminal support device 3. The outer side of the central pipe 306 is sleeved with an outer pipe 305. The space between the central pipe 306 and the outer pipe 305 is provided with a clamping cavity 307. The clamping cavity 307 is provided with a front support sleeve 308 and a rear support sleeve 310 at both ends. The front support sleeve 308 is provided with a plurality of liquid discharge holes 309 in the circumferential direction. The rear support sleeve 310 is provided with a sealing ring 311 at the end away from the clamping cavity 307. The inner wall of the sealing ring 311 is sleeved on the central pipe 306. The side wall of the rear support sleeve 310 is provided with a mixed liquid discharge pipe 13.

[0167] The front support sleeve 308 is provided with an inner sleeve body 313 and an outer sleeve body 314 arranged concentrically. A plurality of support strips 312 are arranged in the circumferential direction between the inner sleeve body 313 and the outer sleeve body 314. The support strips 312 divide the space between the inner sleeve body 313 and the outer sleeve body 314 into a plurality of liquid discharge holes 309.

[0168] The inner baffle device 9 and the inner support device 10 are sleeved on the outer wall of the outer pipe 305. Due to the arrangement of the clamping cavity 307 and the mixed liquid discharge pipe 13, the accumulated mixed liquid after cleaning no longer needs to be discharged from the left end of the oil pipe 6, avoiding excessive resistance to feeding caused by the accumulation of more and more cleaning mixed liquid.

[0169] The dry ice cleaning liquid is pumped into the center pipe 306 from the cleaning liquid inlet pipe 12 and enters the communication pipe section 803 through the adapter section 302. The inner nozzle 801 sprays the dry ice cleaning liquid obliquely to the oil pipe 6 feeding direction, avoiding the low-temperature cleaning liquid flowing along the inner wall of the oil pipe 6 to the vicinity of the electromagnetic heating device 1, which causes the oil pipe 6 to be difficult to heat. After the dry ice cleaning liquid jet flushes the oil dirt, the mixed liquid is flushed into the accumulation at the front support sleeve 308, the mixed liquid discharge pipe 13 is connected to the liquid pump, and the accumulated mixed liquid is pumped into the clamping cavity 307 from the liquid discharge hole 309, and finally is pumped away by the mixed liquid discharge pipe 13.

[0170] The center pipe 306 is made of heat insulation material. Based on this, since the oil pipe 6 is heated in sections, and the specific heat capacity of metal is not large, after being cooled by a large amount of dry ice cleaning liquid, the temperature of the backflow mixed liquid is still lower than the outside, so a low-temperature insulation layer is formed outside the center pipe 306, further preventing the temperature of the dry ice cleaning liquid in the center pipe 306 from dissipating. Therefore, even if the center pipe 306 is long and the liquid is fed from the distal end, there will be no significant loss of temperature.

[0171] The inner cleaning device 8 is provided with a support arm 811 at one end close to the adapter section 302, and a swing lever 14 is also provided. The swing lever 14 is hinged to the support arm 811 at the middle part, and swing balls 15 and contact sheets 17 are respectively arranged at the two ends of the swing lever 14. The inner cleaning device 8 is provided with a magnetic block 16 at the end, the magnetic block 16 attracts the swing balls 15, the inner cleaning device 8 rotates to make the swing balls 15 separate from the magnetic block 16, and the swing lever 14 swings to make the contact sheets 17 contact the outer wall of the adapter section 302.

[0172] The end face of the stop end sleeve 810 is provided with a plurality of support arms 811 in the circumferential direction, and each support arm 811 is provided with a swing lever 14. When the inner cleaning device 8 is stationary, the swing balls 15 are attracted to the magnetic block 16 due to the attraction of the magnetic block 16, at this time, the contact sheets 17 are separated from the outer wall of the adapter section 302. When the rotating speed of the inner cleaning device 8 reaches a certain degree, the swing balls 15 are separated from the magnetic block 16 under the action of centrifugal force, so that the contact sheets 17 at the other end of the swing lever 14 press on the adapter section 302, forming a friction force to inhibit the rotation of the inner cleaning device 8, and realizing the speed reduction of the inner cleaning device 8.

[0173] In order to avoid frequent rapid acceleration and rapid deceleration of the inner cleaning device 8, the contact sheets 17 can be made of spring sheets with a certain elasticity. As the rotating speed of the inner cleaning device 8 increases, the contact pressure will gradually increase, the friction resistance can be gradually increased, and the speed of the inner cleaning device 8 can be gradually stabilized at a value. Avoiding the rotating speed of the inner cleaning device 8 being too fast, affecting the jet flushing effect.

[0174] The contact sheets 17 are fixed at the end of the swing lever 14 by a snap pin, and can be easily replaced after wear. A wear-resistant coating can be sprayed or a wear-resistant ring can be sleeved on the area where the outer wall of the adapter section 302 and the contact sheets 17 are separated.

[0175] The outer nozzle 701 is directed towards the side away from the electromagnetic heating device 1.

[0176] The outer cleaning device 7 is provided with an annular body with an inlet 702, and the outer nozzle 701 is arranged on the annular body. The jet sprayed by the outer nozzle 701 is directed away from the side of the electromagnetic heating device 1, so as to avoid interference with the electromagnetic heating device 1 when the electromagnetic heating device 1 heats the oil pipe 6.

[0177] The outer side of the communication pipe part 803 is provided with a threaded adjusting sleeve 807, and the adjusting sleeve 807 is further sleeved with a connecting ring 806. The connecting ring 806 is rotatable relative to the adjusting sleeve 807, and is further provided with a wiper rod 805. The wiper rod 805 is provided with hinged air springs 809 at both ends. The air springs 809 are hinged to the connecting ring 806. The wiper rod 805 is further provided with a hinged first connecting rod 808 at one end. The first connecting rod 808 is hinged to the nozzle part 804.

[0178] The air springs 809 at both ends of the wiper rod 805 can be different. The outer wall of the adjusting sleeve 807 is provided with an annular groove, and the connecting ring 806 is provided with a jackscrew. The jackscrew is inserted into the annular groove through the connecting ring 806. The adjusting sleeve 807 can be rotated to adjust the posture and position of the wiper rod 805 so that the wiper rod 805 approaches the inner wall of the oil pipe 6. When the inner cleaning device 8 rotates, the wiper rod 805 can rotate and scatter part of the oil dirt, thereby reducing the scraping pressure of the inner baffle device 9.

[0179] The above embodiments are only preferred technical solutions of the present application, and should not be regarded as a limitation of the present application. The protection scope of the present application should be based on the technical solutions claimed in the claims, including equivalent replacement solutions of the technical features claimed in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present application.

Claims

1. A tubing body inspection and cleaning system, characterized by: The system includes a detection station (20) and a cleaning station (21) arranged side by side. Multiple flipping frames are provided between the detection station (20) and the cleaning station (21). The detection station (20) is equipped with a detection device (18) and a conveyor belt (23) at both ends. A movable platform (1803) is provided on the fixed base (1801). A central probe group (1804) and multiple outer probe groups (1805) are provided at one end of the platform (1803). An electromagnetic heating device (1) and a cleaning station (2) are provided at one end of the cleaning station (21). Multiple jacking and traction units (4) are arranged along a straight line at the detection station (20) and the cleaning station (21). The jacking and traction unit (4) includes a liftable traction wheel (401). The traction wheel (401) abuts against the lower end of the oil pipe (6) and rotates to make the oil pipe (6) move along the length direction.

2. The system of claim 1, wherein: A tail support (1802) is provided at one end of a fixed base (1801). Multiple outer protruding rod assemblies (1805) are arranged circumferentially outside the central protruding rod assembly (1804). The central protruding rod assembly (1804) and the outer protruding rod assemblies (1805) are slidably inserted into the tail support (1802). Multiple first detection components (1806) facing the inner wall of the oil pipe (6) are provided circumferentially at the end of the central protruding rod assembly (1804). A second detection component (1807) facing the outer wall of the oil pipe (6) is provided on each outer protruding rod assembly (1805). The central protruding rod assembly (1804) is arranged circumferentially outside the central protruding rod assembly (1804). 04) and the outer probe assembly (1805) both include an inner screw rod (1902), a middle sleeve rod (19) and an outer sleeve rod (1901) that are sequentially sleeved together. The first detection component (1806) or the second detection component (1807) is connected to the end of the middle sleeve rod (19). The middle sleeve rod (19) is slidably connected to the outer sleeve rod (1901). The middle sleeve rod (19) is threadedly connected to the inner screw rod (1902). The outer sleeve rod (1901) moves synchronously with the moving platform (1803). The inner screw rod (1902) rotates to make the middle sleeve rod (19) extend out of the outer sleeve rod (1901).

3. The system of claim 2, wherein: The outer sleeve (1901) is provided with a sliding guide sleeve (1904) at the front end. The inner wall of the sliding guide sleeve (1904) is provided with multiple strip grooves (1905) along the circumferential direction. The outer wall of the middle sleeve (19) is provided with multiple strip guide protrusions (1903) along the circumferential direction. Each strip guide protrusion (1903) slides in each strip groove (1905). The inner wall of the middle sleeve (19) is provided with a threaded sleeve (1906). The outer wall of the inner screw (1902) is threadedly connected to the threaded sleeve (1906). The outer wall of the front end of the detection device (18) is fitted with a first support bushing (1907). The outer wall of the first support bushing (1907) is attached to the inner wall of the middle sleeve (19). The outer wall of the tail end of the middle sleeve (19) is fitted with a second support bushing (1908). The outer wall of the second support bushing (1908) is attached to the inner wall of the outer sleeve (1901).

4. The oil pipe body flaw detection and cleaning system according to claim 3, characterized in that: The first detection assembly (1806) is provided with multiple detection heads (1808) and cleaning nozzles (1915) facing the detection heads (1808) in the circumferential direction. The middle sleeve rod (19) and the inner screw rod (1902) are hollow structures. The front end of the middle sleeve rod (19) is provided with an end face through hole (1909). A sealing head (1910) is provided at the end face through hole (1909). The sealing head (1910) is provided with a central channel (1910) with one end connected to the end face through hole (1909). 12) The side wall of the central channel section (1912) is provided with multiple diversion holes (1913) along the circumference. Each diversion hole (1913) is connected to the cleaning nozzle (1915) through the connecting pipe (1917). The hollow structure of the middle sleeve rod (19) and the inner screw rod (1902) is provided with a coiled hose (1916). The front end of the coiled hose (1916) is connected to the central channel section (1912), and the rear end of the coiled hose (1916) passes through the rear end of the inner screw rod (1902).

5. The oil pipe shaft flaw detection and cleaning system according to claim 2, characterized in that: The moving stage (1803) has a cavity (1809) inside, and an inner sleeve (1822) is provided inside the cavity (1809). The bottom end of the inner sleeve (1822) is provided with a rotatable drive flange shaft (1812) and a plurality of driven flange shafts (1813). The driven flange shafts (1813) are arranged circumferentially outside the drive flange shaft (1812). A first central gear (1816) is sleeved on the outside of the drive flange shaft (1812), and a first driven gear (1817) is sleeved on the outside of the driven flange shafts (1813). Each first driven gear (1817) is connected to the first central gear (1812). 16) Engagement: The rear ends of the center protruding rod group (1804) and the outer protruding rod group (1805) are provided with a first flange sleeve (1814). One end of the first flange sleeve (1814) is connected to the inner thread rod (1902), and the other end of the first flange sleeve (1814) is connected to the drive flange shaft (1812) or the driven flange shaft (1813). The front end of the inner sleeve seat (1822) is also provided with a partition plate (1810). The tail end of each outer sleeve rod (1901) is fitted with a hollow second flange sleeve (1815), and the second flange sleeve (1815) is connected to the partition plate (1810).

6. The oil pipe shaft flaw detection and cleaning system according to claim 5, characterized in that: The end of the moving platform (1803) is provided with a second central gear (1818) and a second driven gear (1819) that are engaged at the rear end. The side end of the moving platform (1803) is provided with a first drive motor (1821). The shaft end of the first drive motor (1821) is fitted with a main drive gear (1820). The main drive gear (1820) is engaged with the second central gear (1818). The second driven gear (1819) is sleeved with the drive flange shaft (1812).

7. The tubing body flaw detection and cleaning system according to claim 6, characterized in that: The fixed base (1801) is provided with a long lead screw (1823) and a guide rail slider assembly (1825). The lower end of the moving stage (1803) is provided with a rotatable lead screw nut (1824). The lead screw nut (1824) is sleeved with the guide rail slider assembly (1825). The lower end of the moving stage (1803) is slidably connected to the fixed base (1801) through the guide rail slider assembly (1825). The second central gear (1818) is sleeved on the lead screw nut (1824).

8. The tubing body flaw detection and cleaning system according to claim 1, characterized in that: The flipping frame includes a first flipping frame (22) and a second flipping frame (2201). At the detection station (20), a first connecting frame (2202) and multiple first flipping frames (22) arranged in a straight line are arranged. At the cleaning station (21), a second connecting frame (2203) and multiple second flipping frames (2201) arranged in a straight line are arranged. Both the first flipping frame (22) and the second flipping frame (2201) include a base frame (2204) and a concave frame (2205). 205), the upper end of the base frame (2204) is provided with a hinge seat (2206), the middle part of the concave frame (2205) is rotatably connected to the hinge seat (2206), one end of the base frame (2204) is provided with a buffer (2207), the base frame (2204) is also provided with a tilting cylinder (2208), one end of the concave frame (2205) is connected to the cylinder rod end of the tilting cylinder (2208), and the other end of the concave frame (2205) abuts against the buffer (2207).

9. The oil pipe shaft flaw detection and cleaning system according to claim 1, characterized in that: The cleaning station (2) is provided with an end support device (3) on the side away from the electromagnetic heating device (1). The end support device (3) is provided with an extension shaft (301) on the side close to the cleaning station (2). The end of the extension shaft (301) is located at the cleaning station (2). The cleaning station (2) is provided with a cleaning box (201). The cleaning box (201) is provided with an inner chamber (203). Both ends of the inner chamber (203) are provided with channel holes (205). The inner chamber (203) is provided with an external cleaning device (7) and an internal cleaning device (7). 8) The end of the extended shaft (301) is connected to the inner cleaning device (8). The inner cleaning device (8) is provided with an inner nozzle (801) arranged in a circumferential direction. The outer cleaning device (7) is provided with an outer nozzle (701) arranged in a circumferential direction. The oil pipe (6) passes through the electromagnetic heating device (1) and the channel hole (205) and is sleeved on the outside of the extended shaft (301). The inner cleaning device (8) and the outer cleaning device (7) clean the inner wall and outer wall of the oil pipe (6) respectively. Multiple lifting and traction units (4) are also provided below the oil pipe (6) in a straight line at intervals.

10. The tubing body flaw detection and cleaning system according to claim 9, characterized in that: An inner baffle device (9) is also provided on the extended shaft (301) near the inner cleaning device (8). The inner baffle device (9) includes multiple inner scrapers (901) arranged circumferentially. The outer side of the inner scrapers (901) abuts against the inner wall of the oil pipe (6). An outer scraper device (11) is also provided at the cleaning station (2). The outer scraper device (11) includes multiple outer scrapers (1101) arranged circumferentially. The outer scrapers (1101) abut against the outer wall of the oil pipe (6). A connecting segment (302) is provided at the end of the extended shaft (301). The device (8) is rotatably connected to the connecting segment (302). The internal cleaning device (8) includes a connecting pipe (803) and a nozzle (804). The connecting pipe (803) is connected to the connecting segment (302). The nozzle (804) is provided with multiple radial extension pipes (802) along the circumference. The internal nozzle (801) is located at the end of the radial extension pipe (802). The spray axis of the internal nozzle (801) is arranged in a non-plane with the rotation axis of the internal cleaning device (8). The spray recoil force of the internal nozzle (801) drives the internal cleaning device (8) to rotate.

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