CN202735305U - Magnetic flux leakage testing machine for oil casing - Google Patents
Magnetic flux leakage testing machine for oil casing Download PDFInfo
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- CN202735305U CN202735305U CN 201220386441 CN201220386441U CN202735305U CN 202735305 U CN202735305 U CN 202735305U CN 201220386441 CN201220386441 CN 201220386441 CN 201220386441 U CN201220386441 U CN 201220386441U CN 202735305 U CN202735305 U CN 202735305U
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Abstract
The utility model discloses a magnetic flux leakage testing machine for an oil casing. The magnetic flux leakage testing machine comprises a control cabinet, a computer, a pipeline detection system and a marking machine, the control cabinet is respectively connected with the computer, the pipeline detection system and the marking machine through signal lines, and the pipeline detection system comprises a plurality of clamping drive devices, a vertical defect detection device and a horizontal defect detection device. Electric signals of a defect of the casing are detected by an infrared monitoring sensor on the pipeline detection system and are divided into two paths by a signal amplification circuit and a noise elimination circuit, signals in one path are transmitted to the computer through a signal processing circuit, the marking machine is driven by the computer to accurately mark in a spraying way on a defective part, defect signals in the other path are mixed into analog signals and are processed by an A/D (analog/digital) conversion circuit of the computer, and the defect level is displayed on the display screen of the computer. By adopting the technical scheme, the defect can be detected when the oil casing rotates to move on a pipeline, the power consumption can be reduced, energy can be saved, the environment can be protected, the detection sensitivity is high, the probe needs not to be replaced for detection of casings with different diameters, the detection efficiency is high, and sectional hoops of the oil casing can be avoided smoothly. Moreover, the probe can be reset automatically after detection, the service life of the magnetic flux leakage testing machine is long, the cost can be decreased, and the quality and effect of detection can be improved.
Description
Technical field
The utility model relates to a kind of direct current magnetic leakage detection principle of utilizing to the device of ferromagnetism tubing or bar flaw detection, specifically the tubing and casing magnetic flux leakage testing device to carrying out the direct current Non-Destructive Testing with the elongated steel pipe joint hoop and the serious greasy dirt of quilt on streamline.
Background technology
Tubing and casing on the market sell and installation process in, much the body inside and outside walls have crackle, etch pit, be mingled with, fold, the defective such as pit, be to identify and to detect with naked eyes only, this just needs instrument to detect and detects a flaw.At present, when the magnetic flux leakage testing device that on the market tubing and casing is detected carries out defects detection to tubing and casing on detecting streamline, the entire machine complex structure, maintenance difficult, poor sensitivity, cost is high, and power consumption is large, not environmental protection, when the tubing and casing to different tube diameters detects, need change different probes, like this, when detecting, must prepare the probe of different size, replace very inconveniently, detection efficiency is low; In addition, owing to there is the joint hoop to exist in the middle of the tubing and casing, the easy damaged probe causes the life-span of complete machine not reach requirement when detecting, and has increased cost, has also had a strong impact on the detection quality simultaneously and has detected effect.
Summary of the invention
The purpose of this utility model is to provide the tubing and casing magnetic flux leakage testing device, this magnetic leakage detection function makes tubing and casing carry out defects detection in rotatablely moving, and power consumption is little, energy-conserving and environment-protective, detection sensitivity is high, need not change probe to the Casing Detection of different tube diameters the time, detection efficiency is high, can avoid smoothly oil jacket tube coupling hoop, and probe can automatically reset after detecting, long service life has reduced cost, has improved the detection quality and has detected effect.
For achieving the above object, the utility model tubing and casing magnetic flux leakage testing device comprises switch board, computing machine and streamline detection system and marking machine, and switch board is connected signal wire with computing machine, streamline detection system respectively and is connected with marking; Described switch board comprises signal amplification circuit, de-noising circuit, signal processing circuit, the streamline detection system comprises the infrared surveillance sensor, detect the electric signal of casing imperfection behind signal amplification circuit and de-noising circuit by the infrared surveillance sensor on the streamline detection system, be divided into two-way, one route signal treatment circuit as calculated machine driving marking machine accurately sprays mark in defective part, another road is mixed into the as calculated A/D change-over circuit of machine of simulating signal with flaw indication, display defect degree on computer display is characterized in that: described streamline detection system comprises a plurality of driving clamping devices, longitudinal defect pick-up unit and transverse defect pick-up unit;
A plurality of driving clamping devices of described streamline detection system include streamline detection system below cabinet, be fixed on the reducing motor in the cabinet and drive cylinder, be fixed on the frame of cabinet top and be fixed on clamp assembly and driven unit in the frame; Described clamp assembly is fixed on the top in the frame, by clamping handwheel, clamping cylinder, planker, clamp running roller, lifter plate and about two guideposts, clamping handwheel is threaded with planker on being fixed on the frame upper end plate, clamping cylinder is fixed on the planker by cylinder block, the below of planker is provided with lifter plate, the cylinder axis of lifter plate and clamping cylinder is fixed, two guideposts about the table-board to right or left two ends of lifter plate are provided with, about two guideposts be actively set on respectively in the left and right sides pilot hole of frame upper end plate, be provided with the clamping running roller in the lower end of lifter plate, clamp in running roller is fixed on the left and right sides by axle the hole of fixed head, the fixed head of the left and right sides is fixedly connected with lifter plate, is provided with in the hole of fixed head and dodges spring; Described driven unit is located at the bottom in the frame, be fixed on the cabinet panel, formed by drive sprocket, driven sprocket, transfer roller I, transfer roller II and bearing seat, be connected by chain respectively between reducing motor and drive sprocket, drive sprocket and the driven sprocket, the transfer roller I is fixed on the main drive shaft on the drive sprocket, the transfer roller II is fixed on the driven shaft of driven sprocket, the two ends of main drive shaft and driven shaft are fixed on the bearing seat by bearing respectively, and the bearing seat at main drive shaft and driven shaft two ends fixedly is located on the panel of cabinet upper end; The angle of described transfer roller I and the installation of transfer roller II is consistent, all at a certain angle with the axial line of tubing and casing with the setting angle that clamps running roller;
The longitudinal defect pick-up unit of described streamline detection system comprise be fixed on the dovetail slide that detects on the streamline cabinet, be located in the dovetail slide notch about two longitudinal flux polar curve bags, be provided with vertical detection frame, vertically master cylinder, vertical little cylinder, vertically control hand wheel, vertically lifting table plate, vertical sonde frame and vertical sonde assembly at cabinet; Described vertical master cylinder fixedly is located at the upper end of vertical detection frame, vertically master cylinder is fixed by axle and vertical lifting table plate, vertical little cylinder fixedly is located on vertical lifting table plate, vertically control hand wheel is threaded with vertical lifting table plate, below vertical lifting table plate, be provided with the vertical sonde frame, lower end at vertical lifting table plate is provided with vertical fixed leg, vertical sonde frame and vertically fixed leg flexible connection, vertical fixed leg above the vertical sonde frame is provided with the spring I, also be fixed with the longitudinally guiding post on the vertical sonde frame, the lower end vertical sonde frame of longitudinally guiding post is fixed, and the upper end is by orienting sleeve and vertically lifting table plate flexible connection; The below of vertical sonde frame is provided with the vertical sonde assembly, vertical sonde assembly one end is movable fixing by rotary bearing pin and vertical sonde frame, the other end is provided with the longitudinally guiding pillar, the upper end of longitudinally guiding pillar is connected with the vertical sonde frame, is provided with vertical damping spring at the longitudinally guiding pillar; Described vertical little cylinder is connected with the longitudinal steel wire rope by the vertical connector on its axle, and the other end of longitudinal steel wire rope and vertical sonde assembly are fixed; Be fixed with vertical left support plate that pure iron is made in the left side of left longitudinal flux polar curve bag, be fixed with vertical right support plate that pure iron is made on the right side of right longitudinal flux polar curve bag, vertically be provided with vertical magnetic conduction web joint that pure iron is made between the left-and-right supporting plate, the magnetic field of left and right sides longitudinal flux polar curve packet generation is fixed with respectively pole shoe through vertically left-and-right supporting plate and vertically magnetic conduction web joint formation loop at the right-hand member of vertical left pole line bag and the left end of vertical right pole line bag;
The transverse defect pick-up unit of described streamline detection system comprises being fixed on and detects two horizontal excitatory line bags about the streamline cabinet, about cabinet between two horizontal excitatory line bags be fixed with horizontal frame and be located at the horizontal master cylinder on the horizontal frame, horizontal little cylinder, laterally handwheel, laterally lifting table plate, transversal sonde frame and transversal sonde assembly; Described horizontal master cylinder fixedly is located at the upper end of horizontal frame, laterally master cylinder is fixed by axle and horizontal lifting table plate, horizontal little cylinder fixedly is located on the horizontal lifting table plate, laterally handwheel is threaded with horizontal lifting table plate, below horizontal lifting table plate, be provided with the transversal sonde frame, lower end at horizontal lifting table plate is provided with horizontal fixed leg, transversal sonde frame and laterally fixed leg flexible connection, horizontal fixed leg above the transversal sonde frame is provided with the spring II, also be fixed with the laterally steering post on the transversal sonde frame, the lower end transversal sonde frame of laterally steering post is fixed, and the upper end is by orienting sleeve and laterally lifting table plate flexible connection; The below of transversal sonde frame is provided with the transversal sonde assembly, transversal sonde assembly one end is movable fixing by rotary bearing pin and transversal sonde frame, the other end is provided with the laterally steering pillar, the upper end of laterally steering pillar is connected with the transversal sonde frame, is provided with the horizontal shock-absorbing spring at the laterally steering pillar; Described horizontal little cylinder is connected with the transverse steel wire rope by the horizontal connector on its axle, and the other end of transverse steel wire rope and transversal sonde assembly are fixed; Described transversal sonde assembly is identical with the structure of vertical sonde assembly, all forms by high magnetosensitive strip probe with probe bracket that the strip probe is complementary, and the strip probe is fixed by screw and probe bracket.
Around the running roller that clamps running roller, transfer roller I and transfer roller II, all wrap up the glue that one deck is mainly become to be grouped into by polyurethane.
In technique scheme, be provided with the clamping drive mechanism of detected tubing and casing, vertical and horizontal defect detecting device, driving clamping device mainly are to make detected tubing and casing righting location, on the setting axis of defectoscope, and clamp rotary actuation.Its structure is by the transfer roller I and the transfer roller II that clamp running roller and its below, the transfer roller I of clamping running roller and its below and transfer roller II can both be stretched and be fallen slip, move up and down by the motion drive lifter plate of clamping cylinder and the clamping running roller that is fixed on the lifter plate, the panel of the Sports band motivation case upper end by driving cylinder and be fixed on that transfer roller I and transfer roller II move up and down on the cabinet panel comes the clamped position of tubing and casing is regulated; Chain transmission by the reducing motor in the cabinet makes the transfer roller I and the transfer roller II that are fixed on the cabinet panel produce rotation, in addition, because clamping running roller, transfer roller I all become angle with the axial line of sleeve pipe with the transfer roller II, when detecting, just can drive the body rotation by the rotation that clamps running roller and transfer roller I and transfer roller II and advance; The cylinder action of this magnetic flux leakage testing device, vertical and horizontal defect detecting device be controlled cabinet control all.When detected tubing and casing or its joint hoop arrival, solenoid valve action corresponding to signal driver sent in the monitoring sensor action of red place, moved by the cylinder of this solenoid control, by vertical detection of cylinder control and laterally pick-up unit action, make probe keep detected state.When the transversal sonde of streamline detection system or vertical sonde collect the magnetic leakage signal of tubing and casing defective, it is transferred to amplifier in the switch board with this signal, through the ripple filtering of making an uproar, be divided into two-way, one the tunnel is mixed into the as calculated A/D change-over circuit of machine of simulating signal with flaw indication, display defect degree on computer display intuitively shows the situation that steel pipe detects.Another route signal treatment circuit drives marking machine and accurately sprays mark in defective part, the steel pipe that defective is exceeded standard, and the pipe that should give up is automatically lower to useless pipe support, good Guan Ze upward arrives the finished product frame.In order to make the probe on horizontal and vertical be close to tested body and dodge the joint hoop, vertically pick-up unit and laterally all installed on the pick-up unit and dodged spring and back-moving spring with the protection probe, increases the probe life-span, reduces vibration, and reduces the blind area.
This magnetic flux leakage testing device advantage is:
1, owing to can digitizing show the defective locations of steel pipe and the degree of depth of defective, Ying Erneng intuitively reflects tubing and casing general defect situation, avoids erroneous judgement, and failing to judge reduces loss.
2, vertical sonde and transversal sonde are novel, unique, and advantageous effect is obvious.Traditional transversal sonde all adopts circumference obvolvent close contact both at home and abroad, and the oil pipe that detects different tube diameters needs the probe of commutation same specification, like this, must prepare the probe of different size during detection, replaces also inconvenient.Vertical sonde of the present utility model and transversal sonde are strips, and its length namely search coverage is more than 1.2 times of this pipe pitch.When detecting the oil pipe of different tube diameters, do not need the probe of commutation same specification, only need the turn handwheel, make vertical sonde and transversal sonde horizontal bottom just be attached to the outside surface of tested oil pipe, operate conveniently; Detecting element in the probe adopts high magneto sensor, and probe and the outside surface of oil pipe can have the gap of 1-2mm, install in addition the serviceable life that shock-absorbing spring improves probe greatly additional; Because probe does not contact directly over oil pipe and with oil pipe, the oil pipe surface and oil contaminant is not just done requirement, practicality strengthens.
3, energy-conserving and environment-protective.The complete machine power of this magnetic flux leakage testing device is less than 5KW.
4, can realize mixed inspection to the oil pipe of plurality of specifications: by the infrared head on the main frame, the identification caliber signals to computing machine, controls every mechanical action by switch board again, realizes the mixed inspection of steel pipe of different tube diameters.Be easy to use, fast.
5, easy to detect flexible.Vertically all installed on pick-up unit and the horizontal pick-up unit and dodged spring and back-moving spring, can avoid smoothly oil jacket tube coupling hoop, and probe can automatically reset after detecting.
6, clamp running roller and the transfer roller I of its below and the roller encapsulate on the transfer roller II, can reduce on the one hand the noise pollution of production testing, environmental protection; On the other hand can the large increase roller serviceable life, this glue principal ingredient is polyurethane, comparing with traditional cast iron has stronger toughness, wearing quality, roller also just improves serviceable life widely.
Description of drawings
Fig. 1 is the theory diagram of the utility model magnetic flux leakage testing device;
Fig. 2 is the streamline detection system structural representation of the utility model magnetic flux leakage testing device;
Fig. 3 is the driving clamping device structural representation among Fig. 2;
Fig. 4 is the A-A cut-open view among Fig. 3;
Fig. 5 is the B-B cut-open view among Fig. 3;
Fig. 6 is the vertical structure of the detecting device synoptic diagram among Fig. 2;
Fig. 7 is the right view of Fig. 6;
Fig. 8 is the structural representation of the vertical sonde in the streamline detection system or transversal sonde in the utility model;
Fig. 9 is the vertical view of Fig. 8;
Figure 10 is the horizontal structure of the detecting device synoptic diagram among Fig. 2;
Figure 11 is the schematic block circuit diagram of the switch board of the utility model magnetic flux leakage testing device;
Figure 12 is the signal amplification circuit schematic diagram among Figure 11.
Embodiment
Below in conjunction with accompanying drawing the utility model magnetic flux leakage testing device is described in further detail.
As seen from Figure 1, a kind of tubing and casing magnetic flux leakage testing device of present embodiment comprises switch board, computing machine and streamline detection system and marking machine, and switch board is connected signal wire with computing machine, streamline detection system respectively and is connected with marking; Switch board comprises signal amplification circuit, de-noising circuit, signal processing circuit, the streamline detection system comprises the infrared surveillance sensor, detect the electric signal of casing imperfection behind signal amplification circuit and de-noising circuit by the infrared surveillance sensor on the streamline detection system, be divided into two-way, one route signal treatment circuit as calculated machine driving marking machine accurately sprays mark in defective part, another road is mixed into the as calculated A/D change-over circuit of machine of simulating signal, display defect degree on computer display with flaw indication.
As seen from Figure 2, streamline detection system in the present embodiment magnetic flux leakage testing device comprises three driving clamping device I, longitudinal defect pick-up unit II and transverse defect pick-up unit III, in implementation, can increase as required or reduce the number that arranges of driving clamping device.In the present embodiment, tubing and casing is advanced through first driving clamping device I rotary actuation, enter and carry out the longitudinal defect detection in the longitudinal defect pick-up unit II, detect complete after, entering second driving clamping device I is rotated to drive and advances again, enter again and carry out the transverse defect detection in the transverse defect pick-up unit III, enter at last to drive in the 3rd the driving clamping device I and advance, realized that the tubing and casing continuous-flow type detects.When the transversal sonde of streamline detection system or vertical sonde collect the magnetic leakage signal of tubing and casing defective, it is transferred to amplifier in the switch board with this signal, through the ripple filtering of making an uproar, be divided into two-way, one the tunnel is mixed into the as calculated A/D change-over circuit of machine of simulating signal with flaw indication, display defect degree on computer display intuitively shows the situation that steel pipe detects.Another route signal treatment circuit drives marking machine and accurately sprays mark in defective part, the steel pipe that defective is exceeded standard, and the pipe that should give up is automatically lower to useless pipe support, good Guan Ze upward arrives the finished product frame.
Fig. 3 is the structural representation of driving clamping device I in the streamline detection system.By Fig. 3, Fig. 4, Fig. 5 as seen, the driving clamping device I comprise streamline detection system below cabinet 1, be fixed on the reducing motor 2 in the cabinet 1 and drive cylinder 2 ', be fixed on the frame 3 of cabinet 1 top and be fixed on clamp assembly and driven unit in the frame 3; Clamp assembly is fixed on the top in the frame 3, by clamping handwheel 4, clamping cylinder 5, planker 6, clamp running roller 7, lifter plate 8 and about two guideposts 9, clamping handwheel 4 is threaded with planker 6 on being fixed on frame 3 upper end plates, clamping cylinder 5 is fixed on the planker 6 by cylinder block, the below of planker 6 is provided with lifter plate 8, lifter plate 8 is fixed with the cylinder axis of clamping cylinder 5, two guideposts 9 about the table-board to right or left two ends of lifter plate 8 are provided with, about two guideposts 9 be actively set on respectively in the left and right sides pilot hole of frame 3 upper end plates, be provided with clamping running roller 7 in the lower end of lifter plate 8, clamp in running roller 7 is fixed on the left and right sides by axle the hole 11 of fixed head 10, the fixed head 10 of the left and right sides is fixedly connected with lifter plate 8, is provided with in the hole 11 of fixed head 10 and dodges spring 12; Driven unit is located at the bottom in the frame 3, be fixed on cabinet 1 panel, by drive sprocket 13, driven sprocket 14, transfer roller I 15, transfer roller II 16 and bearing seat 17 form, reducing motor 2 and drive sprocket 13, be connected by chain respectively between drive sprocket 13 and the driven sprocket 14, transfer roller I 15 is fixed on the main drive shaft 18 on the drive sprocket 13, transfer roller II 16 is fixed on the driven shaft 19 of driven sprocket 14, the two ends of main drive shaft 18 and driven shaft 19 are fixed on the bearing seat 17 by bearing respectively, and the bearing seat 17 at main drive shaft 18 and driven shaft 19 two ends fixedly is located on the panel of cabinet 1 upper end; The angle of described transfer roller I 15 and the installation of transfer roller II 16 is consistent, all at a certain angle with the axial line of tubing and casing with the setting angle that clamps running roller 7.In Fig. 3, the transfer roller I 15 of clamping running roller 7 and its below and transfer roller II 16 can both be stretched and be fallen slip, move up and down by the motion drive lifter plate 8 of clamping cylinder 5 and the clamping running roller 7 that is fixed on the lifter plate 8, the panel of Sports band motivation case 1 upper end by driving cylinder 2 ' and be fixed on that transfer roller I 15 and transfer roller II 16 move up and down on cabinet 1 panel comes the clamped position of tubing and casing is regulated; Rotation by the reducing motor 2 in the cabinet 1, making drive sprocket 13 drive driven sprocket 14 by chain rotates, by main drive shaft 18 and driven shaft 19 the transfer roller I 15 and the transfer roller II 16 that are fixed on the cabinet panel are rotated again, in addition, all at a certain angle with the axial line of sleeve pipe because clamping running roller 7, transfer roller I 15 and transfer roller II 16, when detecting, just can drive the body rotation by the rotation that clamps running roller 7 and transfer roller I 15 and transfer roller II 16 and advance.
Fig. 6 is vertical structure of the detecting device synoptic diagram of present embodiment tubing and casing magnetic flux leakage testing device, and Fig. 7 is the right view of Fig. 6; By Fig. 6, Fig. 7 as seen, the longitudinal defect pick-up unit II of streamline detection system comprise be fixed on the dovetail slide 20 that detects on the streamline cabinet 1, be located in dovetail slide 20 notches about two longitudinal flux polar curve bags 21 and 22, be provided with vertical detection frame 23, vertically master cylinder 24, vertical stingy cylinder 25, vertically control hand wheel 26, vertically lifting table plate 27, vertical sonde frame 28 and vertical sonde assembly 29 at cabinet 1; Vertically master cylinder 24 fixedly is located at the upper end of vertical detection frame 23, vertically master cylinder 24 is fixed by axle and vertical lifting table plate 27, vertical stingy cylinder 25 fixedly is located on vertical lifting table plate 27, vertically control hand wheel 26 is threaded with vertical lifting table plate 27, below vertical lifting table plate 27, be provided with vertical sonde frame 28, lower end at vertical lifting table plate 27 is provided with vertical fixed leg 30, vertical sonde frame 28 and vertically fixed leg 30 flexible connections, vertical fixed leg 30 above vertical sonde frame 28 is provided with spring I 31, also be fixed with longitudinally guiding post 32 on the vertical sonde frame 28, the lower end vertical sonde frame 28 of longitudinally guiding post 32 is fixing, and the upper end is by orienting sleeve and vertically lifting table plate 27 flexible connections; The below of vertical sonde frame 28 is provided with vertical sonde assembly 29, vertical sonde assembly 29 1 ends are movable fixing by rotary bearing pin and vertical sonde frame 28, the other end is provided with longitudinally guiding pillar 33, the upper end of longitudinally guiding pillar 33 is connected with vertical sonde frame 28, is provided with vertical damping spring 34 at longitudinally guiding pillar 33; Vertical stingy cylinder 25 is connected with longitudinal steel wire rope 36 by the vertical connector 35 on its axle, and the other end of longitudinal steel wire rope 36 and vertical sonde assembly 29 are fixing; Be fixed with vertical left support plate 37 that pure iron is made in the left side of left longitudinal flux polar curve bag 21, be fixed with vertical right support plate 38 that pure iron is made on the right side of right longitudinal flux polar curve bag 22, vertically be provided with vertical magnetic conduction web joint 39 that pure iron is made between the left-and-right supporting plate 37 and 38, left and right sides longitudinal flux polar curve bag 21 and 22 magnetic fields that produce consist of the loop through vertical left-and-right supporting plate 37 and 38 with vertical magnetic conduction web joint 39, are fixed with respectively pole shoe 40 at the right-hand member of vertical left pole line bag 21 and the left end of vertical right pole line bag 22.In the present embodiment, when the sleeve pipe body through about between two longitudinal flux polar curve bags 21 and 22 time, drive vertical lifting table plate 27 by vertical master cylinder 24 and drop to the union body upper level, finely tune by vertical control hand wheel 26 pairs of vertical lifting table plates 27, vertical sonde frame 28 and vertical sonde assemblies 29 again, make the lower surface of vertical sonde assembly 29 press close to the body of tested sleeve pipe.Then vertical stingy cylinder 25 stretches out by vertical connector 35 vertical wire rope 36 is descended, and waits the termination of sleeve pipe body after the past, and the horizontal bottom of vertical sonde assembly 29 just is attached to the outside surface of measured oil sleeve pipe, just can detect online the oil pipe body.When detection runs into collar, send signal by the action of infrared surveillance sensor and control vertical stingy cylinder 25 contractions by switch board, move upward by longitudinal steel wire rope 36, the left end of vertical sonde assembly 29 is movably fixed on the vertical sonde frame 28 by rotary bearing pin, the right-hand member of vertical sonde assembly 29 is by 36 pull-ups of longitudinal steel wire rope, makes on the right-hand member of vertical sonde assembly 29 to move, and dodges collar, envoy's hoop can directly clash into and pass through, and reduces the blind area.After the joint hoop passed through, under the effect of the spring I 31 on vertical fixed leg 30 and the vertical damping spring 34 on the longitudinally guiding pillar 33, vertical sonde assembly 29 resetted, and can detect the oil pipe body again.
By Fig. 8, Fig. 9 as seen, vertical sonde assembly 29 is high magnetosensitive strip probes 41 and forms with strip probe 41 probe brackets that are complementary 42 that strip probe 41 is fixed by screw and probe bracket 42.
Figure 10 is the horizontal structure of the detecting device synoptic diagram of present embodiment tubing and casing magnetic flux leakage testing device; As seen from Figure 10, the transverse defect pick-up unit III of the streamline detection system of present embodiment comprises being fixed on and detects about 1 two horizontal excitatory line bags 43 of streamline cabinet and 44, about cabinet 1 between two horizontal excitatory line bags 43 and 44 be fixed with horizontal frame 45 and be located at the horizontal master cylinder 46 on the horizontal frame 45, horizontal stingy cylinder 47, laterally handwheel 48, laterally lifting table plate 49, transversal sonde frame 50 and transversal sonde assembly 51; Laterally master cylinder 46 fixedly is located at the upper end of horizontal frame 45, laterally master cylinder 46 is fixed by axle and horizontal lifting table plate 49, horizontal stingy cylinder 47 fixedly is located on the horizontal lifting table plate 49, laterally handwheel 48 is threaded with horizontal lifting table plate 49, below horizontal lifting table plate 49, be provided with transversal sonde frame 50, lower end at horizontal lifting table plate 49 is provided with horizontal fixed leg 52, transversal sonde frame 50 and laterally fixed leg 52 flexible connections, horizontal fixed leg 52 above transversal sonde frame 50 is provided with spring II 53, also be fixed with laterally steering post 54 on the transversal sonde frame 50, the lower end transversal sonde frame 50 of laterally steering post 54 is fixing, and the upper end is by orienting sleeve and laterally lifting table plate 49 flexible connections; The below of transversal sonde frame 50 is provided with transversal sonde assembly 51, transversal sonde assembly 51 1 ends are movable fixing by rotary bearing pin and transversal sonde frame 50, the other end is provided with laterally steering pillar 55, the upper end of laterally steering pillar 55 is connected with transversal sonde frame 50, is provided with horizontal shock-absorbing spring 56 at laterally steering pillar 55; Horizontal stingy cylinder 47 is connected with transverse steel wire rope 58 by the horizontal connector 57 on its axle, and the other end of transverse steel wire rope 58 and transversal sonde assembly 51 are fixing.In the present embodiment, when the sleeve pipe body through about between two excitatory line bags 43 and 44 time, drive horizontal lifting table plate 49 by horizontal master cylinder 46 and drop to the union body upper level, finely tune by horizontal handwheel 48 pairs of horizontal lifting table plates 49, transversal sonde frame 50 and transversal sonde assemblies 51 again, make the lower surface of transversal sonde assembly 51 press close to the body of tested sleeve pipe.Then horizontal stingy cylinder 47 stretches out by horizontal connector 57 transverse steel wire rope 58 is descended, and waits the termination of sleeve pipe body after the past, and the horizontal bottom of transversal sonde assembly 51 just is attached to the outside surface of measured oil sleeve pipe, just can detect online the oil pipe body.When detection runs into collar, send signal by the action of infrared surveillance sensor and control horizontal stingy cylinder 47 contractions by switch board, move upward by transverse steel wire rope 58, the left end of transversal sonde assembly 51 is movably fixed on the transversal sonde frame 50 by rotary bearing pin, the right-hand member of transversal sonde assembly 51 is by 58 pull-ups of transverse steel wire rope, makes on the right-hand member of transversal sonde assembly 51 to move, and dodges collar, envoy's hoop can directly clash into and pass through, and reduces the blind area.After the joint hoop passed through, under the effect of the damping spring on horizontal fixed leg 52 upper spring II 53 and the laterally steering pillar 55, transversal sonde assembly 51 resetted, and can detect the oil pipe body again.
In the present embodiment, transversal sonde assembly 51 is identical with the structure of vertical sonde assembly 29, all forms by high magnetosensitive strip probe 41 with strip probe 41 probe brackets that are complementary 42, and strip probe 41 is fixing by screw and probe bracket 42.
In the present embodiment, around the running roller that clamps running roller 7, transfer roller I 15 and transfer roller II 16, all wrap up the glue that one deck is mainly become to be grouped into by polyurethane.Can reduce on the one hand the noise pollution of production testing, environmental protection; On the other hand can the large increase roller serviceable life, this glue principal ingredient is polyurethane, comparing with traditional cast iron has stronger toughness, wearing quality, roller also just improves serviceable life widely.
As seen from Figure 11, probe scanning in the vertical and horizontal defect detecting device of the tubing and casing magnetic flux leakage testing device of present embodiment is to defective, be converted to faint electric signal by probe sensor, be amplified to special peak value---crest voltage of the three ten-day period of hot season through the signal amplification circuit of flaw indication front-end amplifier.Each road sensor is because sensitivity is inconsistent, need by the various interference noises of de-noising circuit filtering, to be further divided into two parts after gain balance is consistent: a part is through signal processing circuit logical operation, broadening, time-delay, drive marking machine to the defective position of steel pipe, accurately spray mark; Another part is mixed into the overall defect simulating signal with each road flaw indication, behind the A/D change-over circuit, and after amplitude quantizing and width quantification, the display defect order of severity on the display screen in computing machine.
The signal amplification circuit schematic diagram of switch board in the tubing and casing magnetic flux leakage testing device of shown in Figure 12 is present embodiment.As seen from Figure 12, R1, R2, R3, R4, be the biasing resistor of operational amplifier Y1, R5 is the feedback resistance of the Y1 of operational amplifier, R6 is the biasing resistor of operational amplifier Y2, R7 is its feedback resistance, R8 is its pull-up resistor, and vertical sonde and transversal sonde all connect one group such as the signal amplification circuit of accompanying drawing 12.Amplifying device is operational amplifier, ± 15V dual power supply, its principle of work, when the zero defect signal, operational amplifier Y1 differential input signal is 0, be output as 0, it is in-phase amplifier that operation amplifier is put device Y2, because being input as 0, output also is 0, when stray field that vertical sonde and transversal sonde scanning produce to the tubing and casing defective, produce the voltage signal of millivolt level at its output terminal, through transport and placing device Y1 differential amplification, at a few volt peak values at its about zero point of output terminal output, through capacitor C 1 coupling, deliver to the input end that operation amplifier is put device Y2, the flaw indication voltage of output approximate number volts peak.
In the present embodiment, when detected steel pipe passes the magnetized area of equipment fast along its axis, be subject to vertical and horizontal steady magnetizing field saturated magnetization, for the normal position of sleeve pipe, reveal without the outside table space of the magnetic line of force in the magnetic line of force state that converges and reach capacity, body, for the inside and outside wall defective of body, such as: longitudinal crack, the vertical position such as wounds, because defective presents high magnetic resistance, the magnetic line of force in the body is subject to high magnetic resistance effect from the interfacial refraction of defective to outer table space formation stray field.At magnetized area along distributing magnetic sensitive probe display of steel pipe vertical and horizontal, they and steel pipe keep closely fitting, since about two longitudinal flux polar curve bags 21 and 22 and about two horizontal excitatory line bags 43 and 44 produce magnetic fields, along with the straight line rotation of steel pipe is advanced, vertical and horizontal probe cutting magnetic line, the stray field that steel tube surface occurs is carried out scanning, when the stray field of defective formation is arrived in scanning, its vertical component is enclosed changes into electric signal, computing machine is analyzed and calculation process through delivering to after amplification and the denoising Processing, and send the order-driven marker, to the mark of defective workpiece.What transversal sonde was used for detecting steel pipe laterally hinders defective, is mainly used to detect the horizontal wound of steel pipe, such as steel pipe surfaces externally and internally burn into crackle, through hole, laterally hinder, fold, be mingled with etc.What vertical sonde was used for detecting steel pipe vertically hinders defective, and be mainly used to detect steel pipe and vertically hinder, as: the defectives such as tube inner wall eccentric wear, the attenuation of oil pipe wall thickness.
Claims (1)
1. a tubing and casing magnetic flux leakage testing device comprises switch board, computing machine and streamline detection system and marking machine, and switch board is connected signal wire with computing machine, streamline detection system respectively and is connected with marking; Described switch board comprises signal amplification circuit, de-noising circuit, signal processing circuit, the streamline detection system comprises the infrared surveillance sensor, detect the electric signal of casing imperfection behind signal amplification circuit and de-noising circuit by the infrared surveillance sensor on the streamline detection system, be divided into two-way, one route signal treatment circuit as calculated machine driving marking machine accurately sprays mark in defective part, another road is mixed into the as calculated A/D change-over circuit of machine of simulating signal with flaw indication, display defect degree on computer display is characterized in that: described streamline detection system comprises a plurality of driving clamping devices (I), longitudinal defect pick-up unit (II) and transverse defect pick-up unit (III);
A plurality of driving clamping devices (I) of described streamline detection system include streamline detection system below cabinet (1), be fixed on the reducing motor (2) in the cabinet (1) and drive cylinder (2 '), be fixed on the frame (3) of cabinet (1) top and be fixed on frame (3) interior clamp assembly and driven unit; Described clamp assembly is fixed on the top in the frame (3), by clamping handwheel (4), clamping cylinder (5), planker (6), clamp running roller (7), lifter plate (8) and about two guideposts (9), clamping handwheel (4) is threaded with planker (6) on being fixed on frame (3) upper end plate, clamping cylinder (5) is fixed on the planker (6) by cylinder block, the below of planker (6) is provided with lifter plate (8), lifter plate (8) is fixed with the cylinder axis of clamping cylinder (5), two guideposts (9) about the table-board to right or left two ends of lifter plate (8) are provided with, about two guideposts (9) be actively set on respectively in the left and right sides pilot hole of frame (3) upper end plate, be provided with clamping running roller (7) in the lower end of lifter plate (8), clamp in running roller (7) is fixed on the left and right sides by axle the hole (11) of fixed head (10), the fixed head of the left and right sides (10) is fixedly connected with lifter plate (8), is provided with in the hole (11) of fixed head (10) and dodges spring (12); Described driven unit is located at the bottom in the frame (3), be fixed on cabinet (1) panel, by drive sprocket (13), driven sprocket (14), transfer roller I (15), transfer roller II (16) and bearing seat (17) form, reducing motor (2) and drive sprocket (13), be connected by chain respectively between drive sprocket (13) and the driven sprocket (14), transfer roller I (15) is fixed on the main drive shaft (18) on the drive sprocket (13), transfer roller II (16) is fixed on the driven shaft (19) of driven sprocket (14), the two ends of main drive shaft (18) and driven shaft (19) are fixed on the bearing seat (17) by bearing respectively, and the bearing seat (17) at main drive shaft (18) and driven shaft (19) two ends fixedly is located on the panel of cabinet (1) upper end; The angle of described transfer roller I (15) and the installation of transfer roller II (16) is consistent, all at a certain angle with the axial line of tubing and casing with the setting angle that clamps running roller (7);
The longitudinal defect pick-up unit (II) of described streamline detection system comprise be fixed on the dovetail slide (20) that detects on the streamline cabinet (1), be located in dovetail slide (20) notch about two longitudinal flux polar curve bags (21,22), be provided with vertical detection frame (23), vertically master cylinder (24), vertical little cylinder (25), vertically control hand wheel (26), vertically lifting table plate (27), vertical sonde frame (28) and vertical sonde assembly (29) at cabinet (1); Described vertical master cylinder (24) fixedly is located at the upper end of vertical detection frame (23), vertically master cylinder (24) is fixing with vertical lifting table plate (27) by axle, vertical little cylinder (25) fixedly is located on vertical lifting table plate (27), vertically control hand wheel (26) is threaded with vertical lifting table plate (27), below at vertical lifting table plate (27) is provided with vertical sonde frame (28), lower end at vertical lifting table plate (27) is provided with vertical fixed leg (30), vertical sonde frame (28) and vertically fixed leg (30) flexible connection, vertical fixed leg (30) in vertical sonde frame (28) top is provided with spring I (31), also be fixed with longitudinally guiding post (32) on the vertical sonde frame (28), the lower end vertical sonde frame (28) of longitudinally guiding post (32) is fixing, and the upper end is by orienting sleeve and vertically lifting table plate (27) flexible connection; The below of vertical sonde frame (28) is provided with vertical sonde assembly (29), vertical sonde assembly (29) one ends are movable fixing by rotary bearing pin and vertical sonde frame (28), the other end is provided with longitudinally guiding pillar (33), the upper end of longitudinally guiding pillar (33) is connected with vertical sonde frame (28), is provided with vertical damping spring (34) at longitudinally guiding pillar (33); Described vertical little cylinder (25) is connected with longitudinal steel wire rope (36) by the vertical connector (35) on its axle, and the other end of longitudinal steel wire rope (36) and vertical sonde assembly (29) are fixing; Be fixed with vertical left support plate (37) that pure iron is made in the left side of left longitudinal flux polar curve bag (21), be fixed with vertical right support plate (38) that pure iron is made on the right side of right longitudinal flux polar curve bag (22), vertical left-and-right supporting plate (37,38) be provided with vertical magnetic conduction web joint (39) that pure iron is made between, left and right sides longitudinal flux polar curve bag (21,22) magnetic field that produces is through vertical left-and-right supporting plate (37,38) and vertically magnetic conduction web joint (39) consists of the loop, is fixed with respectively pole shoe (40) at the right-hand member of vertical left pole line bag (21) and the left end of vertical right pole line bag (22);
The transverse defect pick-up unit (III) of described streamline detection system comprises being fixed on and detects two horizontal excitatory line bags (43,44) about streamline cabinet (1), about cabinet (1) between two horizontal excitatory line bags (43,44) be fixed with horizontal frame (45) and be located at horizontal master cylinder (46) on the horizontal frame (45), horizontal little cylinder (47), laterally handwheel (48), laterally lifting table plate (49), transversal sonde frame (50) and transversal sonde assembly (51); Described horizontal master cylinder (46) fixedly is located at the upper end of horizontal frame (45), laterally master cylinder (46) is fixing with horizontal lifting table plate (49) by axle, horizontal little cylinder (47) fixedly is located on the horizontal lifting table plate (49), laterally handwheel (48) is threaded with horizontal lifting table plate (49), below at horizontal lifting table plate (49) is provided with transversal sonde frame (50), lower end at horizontal lifting table plate (49) is provided with horizontal fixed leg (52), transversal sonde frame (50) and laterally fixed leg (52) flexible connection, horizontal fixed leg (52) in transversal sonde frame (50) top is provided with spring II (53), also be fixed with laterally steering post (54) on the transversal sonde frame (50), the lower end transversal sonde frame (50) of laterally steering post (54) is fixing, and the upper end is by orienting sleeve and laterally lifting table plate (49) flexible connection; The below of transversal sonde frame (50) is provided with transversal sonde assembly (51), transversal sonde assembly (51) one ends are movable fixing by rotary bearing pin and transversal sonde frame (50), the other end is provided with laterally steering pillar (55), the upper end of laterally steering pillar (55) is connected with transversal sonde frame (50), is provided with horizontal shock-absorbing spring (56) at laterally steering pillar (55); Described horizontal little cylinder (47) is connected with transverse steel wire rope (58) by the horizontal connector (57) on its axle, and the other end of transverse steel wire rope (58) and transversal sonde assembly (51) are fixing; Described transversal sonde assembly (51) is identical with the structure of vertical sonde assembly (29), all forms by high magnetosensitive strip probe (41) with probe bracket (42) that strip probe (41) is complementary, strip probe (41) is fixed by screw and probe bracket (42).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220386441 CN202735305U (en) | 2012-08-07 | 2012-08-07 | Magnetic flux leakage testing machine for oil casing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220386441 CN202735305U (en) | 2012-08-07 | 2012-08-07 | Magnetic flux leakage testing machine for oil casing |
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| CN202735305U true CN202735305U (en) | 2013-02-13 |
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| CN 201220386441 Expired - Fee Related CN202735305U (en) | 2012-08-07 | 2012-08-07 | Magnetic flux leakage testing machine for oil casing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768239A (en) * | 2012-08-07 | 2012-11-07 | 安庆市安科精机有限责任公司 | Magnetic flux leakage defection machine of oil sleeve |
| CN105911223A (en) * | 2016-04-20 | 2016-08-31 | 东莞璋泰五金制品有限公司 | Detection method for main beam pipe in automobile meter |
| CN106442706A (en) * | 2016-08-26 | 2017-02-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Underground dynamic steel wire detector |
| CN106950241A (en) * | 2017-02-27 | 2017-07-14 | 南昌大学 | A kind of method of other adulterated oil species and content in prediction tea oil |
| CN113246614A (en) * | 2021-05-17 | 2021-08-13 | 中国石油天然气集团有限公司 | Installation method of coiled tubing defect mark spraying system |
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2012
- 2012-08-07 CN CN 201220386441 patent/CN202735305U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768239A (en) * | 2012-08-07 | 2012-11-07 | 安庆市安科精机有限责任公司 | Magnetic flux leakage defection machine of oil sleeve |
| CN105911223A (en) * | 2016-04-20 | 2016-08-31 | 东莞璋泰五金制品有限公司 | Detection method for main beam pipe in automobile meter |
| CN106442706A (en) * | 2016-08-26 | 2017-02-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Underground dynamic steel wire detector |
| CN106442706B (en) * | 2016-08-26 | 2024-03-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Underground steel wire dynamic detector |
| CN106950241A (en) * | 2017-02-27 | 2017-07-14 | 南昌大学 | A kind of method of other adulterated oil species and content in prediction tea oil |
| CN113246614A (en) * | 2021-05-17 | 2021-08-13 | 中国石油天然气集团有限公司 | Installation method of coiled tubing defect mark spraying system |
| CN113246614B (en) * | 2021-05-17 | 2022-05-13 | 中国石油天然气集团有限公司 | Installation method of coiled tubing defect mark spraying system |
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