CN111024809A - Opening and closing mechanism of array probe in steel pipe transverse defect magnetic leakage detection - Google Patents
Opening and closing mechanism of array probe in steel pipe transverse defect magnetic leakage detection Download PDFInfo
- Publication number
- CN111024809A CN111024809A CN202010033915.8A CN202010033915A CN111024809A CN 111024809 A CN111024809 A CN 111024809A CN 202010033915 A CN202010033915 A CN 202010033915A CN 111024809 A CN111024809 A CN 111024809A
- Authority
- CN
- China
- Prior art keywords
- probe
- steel pipe
- ring
- shaped
- closing mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000523 sample Substances 0.000 title claims abstract description 130
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 108
- 239000010959 steel Substances 0.000 title claims abstract description 108
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 74
- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 230000007547 defect Effects 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 15
- 230000004907 flux Effects 0.000 claims description 21
- 240000007643 Phytolacca americana Species 0.000 claims description 19
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 12
- 238000003466 welding Methods 0.000 description 9
- 230000002035 prolonged effect Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000005294 ferromagnetic effect Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/87—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields using probes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses an opening and closing mechanism of an array probe in the magnetic leakage detection of transverse defects of a steel pipe, which comprises a probe assembly and an opening and closing mechanism; the probe assembly comprises a probe, a crank arm and a fixed arm, the fixed arm is arranged on the metal plate, the crank arm is rotatably connected with the fixed arm, and the probe is fixedly arranged on the crank arm; the opening and closing mechanism comprises a poking ring, a pushing ring component, a limiting ring component and a driving part, wherein the limiting ring component is fixedly arranged on the magnetic conduction plate, two ends of the pushing ring component are respectively connected with the driving part and the poking ring, and the pushing ring component which axially and horizontally moves is slidably connected with the limiting ring component; the central axis of the poking ring is coincided with the central axis of the steel pipe detection area. The invention has the beneficial effects that: the method is suitable for detecting steel pipes with different diameters; the probe can be reliably opened or closed at the same time and is attached to the outer surface of the detected steel pipe, so that the steel pipe can be comprehensively detected, the probe is prevented from being damaged by collision, and the service life, reliability and stability of the probe are improved.
Description
Technical Field
The invention relates to a steel pipe magnetic flux leakage detection device, in particular to an opening and closing mechanism of an array probe in the steel pipe transverse defect magnetic flux leakage detection.
Background
At present, in the steel pipe transverse defect magnetic leakage detection device at home and abroad, an array formed by a plurality of probes is required to be adopted, the steel pipe circumference is completely covered and attached by more than 360 degrees, and when the steel pipe rapidly comes and returns through the magnetic leakage detection device along the axial direction, the steel pipe is comprehensively detected and rechecked.
The steel pipe transverse defect magnetic flux leakage detection device at home and abroad mostly adopts an array probe opening and closing mechanism with a spring, and the array probe opening and closing mechanism with the spring ensures that when a steel pipe passes through the array probe at a high speed back and forth, the end head of the steel pipe, or a thickened end head, or a coupling of the steel pipe cannot damage any probe in the array probe. However, in the array probe opening and closing mechanism with the spring, two ends of a steel pipe passing back and forth at a high speed always repeatedly and repeatedly directly collide with each probe, so that a probe body is rapidly worn, a sensor in the probe is damaged, even a probe sheet is knocked off, and a probe crank arm turns to fail, the detection reliability and stability of equipment are seriously affected, the use cost is high, and the related international standard is difficult to implement: SN EN ISO10893-3-2011 ' automatic seamless full-periphery magnetic flux leakage detection and welding (except for submerged arc welding) ' ferromagnetic steel pipe longitudinal and/or transverse defect detection '.
Or an array probe opening and closing mechanism with a cylinder is adopted; although the array probe is driven to open and close under the action of the air cylinder, the impact of the end of the steel pipe is avoided, the array probe opening and closing mechanism is extremely complex due to the numerous air cylinder arrays, and the same problem can be caused when any one air cylinder is damaged and fails.
Or the motor drives to realize the opening and closing of the array probe, as application No. 201410070775.6, discloses a steel tube magnetic flux leakage detection device, comprising a detection box body, wherein the two ends of the detection box body are respectively provided with an inlet three-jaw chuck and an outlet three-jaw chuck, a first magnetizing coil, a hollow rotator and a second magnetizing coil are sequentially arranged between an upper plate and a lower plate of the detection box body along the advancing direction of the steel tube, the hollow rotator is provided with a probe frame with an induction probe group, the hollow rotator drives the probe frame to rotate around the through hole of the steel tube under the action of a rotation driving device, and the center of each device is provided with a through hole; and a steel pipe pull body is arranged between the probe frame and the second magnetizing coil, the steel pipe pull body is provided with an axial driving device and a radial driving device, the end surface of the steel pipe pull body, which is close to the probe frame, is provided with a contact sensor, and the end surface of the other side of the steel pipe pull body is provided with a position sensor. Each probe in the application is controlled by different motors respectively, and the structure is complex and is not easy to control.
Therefore, the array probe opening and closing mechanisms have the problems that the opening and closing of the array probe are unreliable, the probe is easy to be damaged by impact, the service life of the probe is low, the use cost of equipment is high, the detection reliability is poor, the stability is poor, and the international standard requirements are difficult to meet for a long time.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to solve the problem that the existing array probe is unreliable to open and close and is easy to damage.
The invention solves the technical problems through the following technical means:
the opening and closing mechanism of the array probe in the magnetic leakage detection of the transverse defects of the steel pipe comprises probe components which are arranged in a circumferential array mode and an opening and closing mechanism which can enable all the probe components to be opened and closed simultaneously;
the area enclosed by all the probe components is circular, and the area is a steel pipe detection area; the probe assembly comprises a probe, a crank arm and a fixed arm, the fixed arm can be adjustably mounted on the metal plate, one end of the crank arm is movably connected with the fixed arm, the probe is fixedly mounted at the other end of the crank arm, and the probe is mounted towards the steel pipe;
the opening and closing mechanism comprises a poking ring, a pushing ring component, a limiting ring component and a driving part, wherein the limiting ring component is fixedly arranged on the magnetic conduction plate, one end of the pushing ring component is connected with the driving part, the other end of the pushing ring component is connected with the poking ring, and the pushing ring component capable of axially and horizontally moving is slidably connected with the limiting ring component;
the central axis of the poking ring is coincided with the central axis of the steel pipe detection area.
The fixing arm can be adjustably arranged on the metal plate, the diameter of a steel pipe detection area can be adjusted, and the device can be suitable for detecting steel pipes with different diameters; the driving part pushes the push ring component to push the poking ring to move along the axis, all the probes can be reliably opened or closed and attached to the outer surface of the detected steel pipe at the same time, comprehensive detection on the steel pipe is realized, the damage and impact of the thickened steel pipe end to the array part of the probes can be avoided, further, the impact damage to the array of the probes by the steel pipe end with a coupling or a thread can be avoided, all transverse magnetic flux leakage detection probes are prevented from being damaged by the steel pipe end in an impacting manner, the service life of the probes is greatly prolonged, the service life of the probes is prolonged, the use cost of magnetic flux leakage detection equipment is reduced, and the operation efficiency is improved; guaranteed that all horizontal magnetic leakage test probe can not damaged by the steel pipe end striking, just can not appear two end striking interference signal of steel pipe, improved key technical index such as complete machine detection signal noise ratio and detectivity, satisfied international standard: SN EN ISO10893-3-2011 all technical requirements of automatic seamless full-periphery magnetic flux leakage detection and welding (except submerged arc welding) ferromagnetic steel pipe longitudinal and/or transverse defect detection; as long as the motion state of the poking ring is monitored, the error opening and closing and damage of any probe can be avoided, so that the reliability and stability of the whole machine operation detection during the whole year can be greatly improved, and the structure is simplest.
Preferably, the head of the crank arm is provided with a U-shaped groove, the probe is fixedly installed in the U-shaped groove, the tail end of the crank arm is connected with the tail end of the fixed arm through a connecting shaft, the tail end of the crank arm is provided with a first limiting surface and a first inclined surface forming an included angle theta with the first limiting surface, and correspondingly, the tail end of the fixed arm is provided with a second limiting surface and a second inclined surface forming an included angle omega with the second limiting surface; the crank arm has two extreme positions, including between first extreme position, the second extreme position, first extreme position is the position of probe and steel pipe surface laminating, and at this moment, first spacing face and the spacing face of second coincide completely, theta + omega contained angle is personally submitted with the second slope to first inclined plane, and the steel pipe surface is kept away from to the second extreme position for the probe, and at this moment, first inclined plane and the coincidence of second inclined plane, first spacing face and the spacing theta + omega contained angle of personally submitting of second.
Preferably, the connecting part of the crank arm and the fixed arm is provided with a spring, the spring is sleeved at two ends of the connecting shaft, and two ends of the spring are respectively abutted to the corner of the crank arm and the bulge of the fixed arm.
Under the combined action of the spring, the first limiting surface and the second limiting surface, and the first inclined surface and the second inclined surface, when the flat steel pipe is detected, the spring can compress the crank arm, and the probe is pressed to a position attached to the outer surface of the steel pipe; when the end of the steel pipe is produced, the crank arm can rotate around the connecting shaft under the pushing of the poking ring to drive the probe array to be fully opened so as to avoid the damage and the impact of the end part of the steel pipe on the array part of the probe; the structure is simple and ingenious.
Preferably, the device further comprises an adjusting plate fixed on the metal plate, the adjusting plate is fixedly installed on the metal plate, the fixing arm is provided with a plurality of locking bolts, and the fixing arm is connected with the adjusting plate in a sliding or locking mode.
Through fixed arm and regulating plate sliding connection, when adjusting suitable position, through locking bolt locking, the regulation mode is simple, reliable.
Preferably, the limiting ring assembly comprises a magnetic conductive ring and a guide sleeve, the magnetic conductive ring is mounted on the magnetic conductive plate through a bolt, the magnetic conductive ring is of a circular ring type tubular structure, the central axis of the magnetic conductive ring coincides with the central axis of the poking ring, at least three through holes which are circumferentially arranged are formed in the magnetic conductive ring along the axis direction, and the guide sleeve is fixedly mounted in the through holes.
The effect of magnetic conduction ring is that the gliding spacing of guide bar is provided for the guide bar only realizes axial slip, and the effect of guide pin bushing is that reduce sliding friction.
Preferably, the push ring assembly comprises a first frame ring, a second frame ring and at least three guide rods, the first frame ring and the second frame ring are of the same annular plate structure, the first frame ring and the second frame ring are fixedly connected through the guide rods, and the guide rods are in sliding connection in the through holes.
Preferably, the driving part comprises a driving part and a connecting rod assembly, the driving end of the driving part can be connected with the connecting rod assembly in a telescopic mode, and the connecting rod assembly is connected with the pushing ring assembly.
Preferably, the driving piece is an air cylinder, and the air cylinder can be connected to the magnetic conduction plate in a swinging mode.
Preferably, the connecting rod assembly comprises a joint, a poke rod, a support rod and an arc-shaped pushing frame, the arc-shaped pushing frame is of a Y-shaped structure, the part of the Y-shaped upper part, which is separated from the fork, is arc-shaped, the lower part is a straight rod, and two ends of the arc-shaped pushing frame are fixedly connected with the pushing ring assemblies; one end of the joint, which is far away from the driving piece, is a U-shaped interface, two side walls of the U-shaped interface are provided with first kidney-shaped holes which penetrate through the U-shaped interface, two ends of the poke rod are of a single-hole flat structure, the middle part of the poke rod is provided with a through slotted hole, and two side walls of the slotted hole are provided with second kidney-shaped holes which penetrate through the slotted hole;
the driving end of the driving piece is connected with one end of the connector, one end of the poke rod is connected with the first kidney-shaped hole in a sliding mode through a first pin shaft, the other end of the poke rod is connected with the straight rod of the arc-shaped pushing frame in a rotating mode through a second pin shaft, one end of the support rod is fixedly installed on the magnetic conduction plate, and the other end of the support rod is connected with the second kidney-shaped hole in a sliding mode through a third pin shaft
Wherein, the joint can suitable swing with the drive end junction, prevents to feel suffocated because of the effect of force in flexible in-process.
Preferably, the magnetic conduction plate is fixedly installed on the bottom plate, and the bottom of the metal plate is provided with a roller which rolls on the bottom plate.
The invention has the advantages that:
(1) the fixing arm can be adjustably arranged on the metal plate, so that the diameter of a steel pipe detection area can be adjusted, and the device can be suitable for detecting steel pipes with different diameters; the driving part pushes the push ring component to push the poking ring to move along the axis, all the probes can be reliably opened or closed and attached to the outer surface of the detected steel pipe at the same time, comprehensive detection on the steel pipe is realized, the damage and impact of the thickened steel pipe end to the array part of the probes can be avoided, further, the impact damage to the array of the probes by the steel pipe end with a coupling or a thread can be avoided, all transverse magnetic flux leakage detection probes are prevented from being damaged by the steel pipe end in an impacting manner, the service life of the probes is greatly prolonged, the service life of the probes is prolonged, the use cost of magnetic flux leakage detection equipment is reduced, and the operation efficiency is improved; guaranteed that all horizontal magnetic leakage test probe can not damaged by the steel pipe end striking, just can not appear two end striking interference signal of steel pipe, improved key technical index such as complete machine detection signal noise ratio and detectivity, satisfied international standard: SN EN ISO10893-3-2011 all technical requirements of automatic seamless full-periphery magnetic flux leakage detection and welding (except submerged arc welding) ferromagnetic steel pipe longitudinal and/or transverse defect detection; as long as the motion state of the poking ring is monitored, the error opening and closing and damage of any probe can be avoided, so that the reliability and stability of the whole machine operation detection during the whole year can be greatly improved, and the structure is simplest.
(2) Under the combined action of the spring, the first limiting surface and the second limiting surface, and the first inclined surface and the second inclined surface, when the flat steel pipe is detected, the spring can compress the crank arm, and the probe is pressed to a position attached to the outer surface of the steel pipe; when the end of the steel pipe is produced, the crank arm can rotate around the connecting shaft under the pushing of the poking ring to drive the probe array to be fully opened so as to avoid the damage and the impact of the end part of the steel pipe on the array part of the probe; the structure is simple and ingenious.
(3) Through fixed arm and regulating plate sliding connection, when adjusting suitable position, through locking bolt locking, the regulation mode is simple, reliable.
(4) The effect of magnetic conduction ring is that the gliding spacing of guide bar is provided for the guide bar only realizes axial slip, and the effect of guide pin bushing is that reduce sliding friction.
Drawings
FIG. 1 is a cross-sectional view of an opening and closing mechanism of an array probe in the magnetic leakage detection of the transverse defects of the steel pipe according to the embodiment of the invention;
FIG. 2 is a schematic structural diagram of an opening and closing mechanism of an array probe in the magnetic leakage detection of the transverse defects of the steel pipe according to the embodiment of the invention;
FIG. 3 is a schematic structural diagram of an opening and closing mechanism of an array probe in the magnetic leakage detection of the transverse defects of the steel pipe according to the embodiment of the invention;
FIG. 4 is a schematic structural view of the probe assembly;
FIG. 5 is a cross-sectional view of the probe assembly;
FIG. 6 is a schematic view of the probe assembly engaging a steel pipe;
FIG. 7 is a left side view of FIG. 6;
FIG. 8 is a cross-sectional view of FIG. 6;
FIG. 9 is a schematic view of the probe assembly shown separated from the steel pipe;
fig. 10 is a cross-sectional view of fig. 9.
Reference numbers in the figures: the probe assembly 1, the probe 11, the probe gasket 111, the crank arm 12, the fixing arm 13, the locking bolt 131, the spring 14, the connecting shaft 15, the adjusting plate 16, the roller 17,
The opening and closing mechanism 2, the poking ring 21, the push ring component 22, the first frame ring 221, the second frame ring 222, the guide rod 223, the limit ring component 23, the magnetic conductive ring 231, the guide sleeve 232, the driving part 24, the cylinder 241, the joint 242, the poking rod 243, the support rod 244, the arc-shaped pushing frame 245, the arc-shaped pushing frame, the arc-shaped,
The magnetic conduction plate 3, the metal plate 4, the steel pipe 5, the bottom plate 6, the guide rail 61 and the magnetizing coil 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, 2 and 3, the opening and closing mechanism of the array probe in the magnetic leakage detection of the transverse defects of the steel pipe comprises probe assemblies 1 and an opening and closing mechanism 2 which are arranged in a circumferential array;
the area enclosed by all the probe assemblies 1 is circular, the area is a steel pipe detection area, the central axis of the steel pipe 5 is overlapped with the central axis of the array probe assemblies 1, the probe 11 is installed towards the steel pipe 5, and the probe 11 is attached to the outer surface of the steel pipe 5; the opening and closing mechanism 2 comprises a poking ring 21, a pushing ring assembly 22, a limiting ring assembly 23 and a driving part 24, the limiting ring assembly 23 is fixedly arranged on the magnetic conduction plate 3, one end of the pushing ring assembly 22 is connected with the driving part 24, the other end of the pushing ring assembly 22 is connected with the poking ring 21, and the pushing ring assembly 22 capable of axially and horizontally moving is connected with the limiting ring assembly 23 in a sliding manner; the central axis of the poke-open ring 21 coincides with the central axis of the steel pipe detection area.
As shown in fig. 4, the probe assembly 1 includes a probe 11, a crank arm 12, a fixing arm 13, a spring 14, a connecting shaft 15, and an adjusting plate 16;
the head of the crank arm 12 is provided with a U-shaped groove, the probe 11 is fixedly arranged in the U-shaped groove through a probe gasket 111, the crank arm 12 is of a connecting rod structure with a certain corner, the part for mounting the probe is horizontal, and the tail end of the probe is raised;
the fixing arm 13 is of a straight rod-shaped structure, as shown in fig. 2, a trapezoidal dovetail-shaped convex structure is arranged on the left side face of the fixing arm 13, a plurality of locking bolts 131 arranged at intervals are arranged on the right side face of the fixing arm, as shown in fig. 1, the adjusting plate 16 is fixedly arranged on the metal plate 4, the adjusting plate 16 is provided with a dovetail-shaped concave structure, the adjusting plate 16 and the fixing arm 13 can be connected with the convex structure in a sliding mode through the concave structure, and when the adjusting plate slides to a proper position, the adjusting plate is locked through the locking bolts 131, so that the adjusting mode is simple; the tail end of the crank arm 12 is connected with the tail end of the fixed arm 13 through a connecting shaft 15;
as shown in fig. 5, the tail end of the crank arm 12 is provided with a first limiting surface and a first inclined surface forming an included angle θ with the first limiting surface; correspondingly, the tail end of the fixed arm 13 is provided with a second limiting surface and a second inclined surface forming an included angle omega with the second limiting surface; the crank arm 12 swings between a first limit position and a second limit position, the first limit position is the position where the probe 11 is attached to the outer surface of the steel pipe 5, at the moment, the first limit surface and the second limit surface completely coincide, the fixed arm 13 and the crank arm 12 form 90 degrees, the first inclined surface and the second inclined surface form an included angle (theta + omega), the second limit position is that the probe 11 is far away from the outer surface of the steel pipe 5, the first inclined surface and the second inclined surface coincide, the first limit surface and the second limit surface form an included angle (theta + omega), and the fixed arm 13 and the crank arm 12 form an angle (90- (theta + omega)).
A spring 14 is arranged at the joint of the crank arm 12 and the fixed arm 13, the spring 14 is sleeved at two ends of a connecting shaft 15, two ends of the spring 14 are respectively abutted to the corner of the crank arm 12 and the end of the convex structure of the fixed arm 14, the spring 14 has outward elasticity, when no external force acts, two ends of the spring 14 can ensure that the crank arm 12 is at a first limit position, when the external force acts, the included angle of two ends of the spring 14 is reduced, and the crank arm 12 rotates along the connecting shaft 15; in this embodiment, the spring 14 is a torsion spring, and is composed of two symmetrically installed torsion springs.
In the embodiment, under the combined action of the spring 14, the first limit surface and the second limit surface, and the first inclined surface and the second inclined surface, when the flat steel pipe is detected, the spring 14 can press the crank arm 12, and the probe 11 is pressed to a position attached to the outer surface of the steel pipe 5; when the end of the steel pipe appears, the crank arm 12 can rotate around the connecting shaft 15 under the pushing of the poking ring 21 to drive the probe 11 array to be fully opened so as to avoid the damage and the impact of the end part of the steel pipe on the array part of the probe; the structure is simple and ingenious.
In this embodiment, the push ring assembly 22 includes a first frame ring 221, a second frame ring 222, and at least three guide rods 223, wherein a plane is defined by three points, the number of the guide rods 223 is at least three, in this embodiment, the number of the guide rods 223 is three, the first frame ring 221 and the second frame ring 222 are of the same annular plate structure, the first frame ring 221 and the second frame ring 222 are fixedly connected by the guide rods 223, the three guide rods 223 have the same length, and the three guide rods are in the shape of an inverted right triangle.
The spacing ring assembly 23 includes a magnetic conductive ring 231 and a guide sleeve 232, the magnetic conductive ring 231 is installed on the magnetic conductive plate 3 through a bolt, or is installed on the magnetic conductive plate 3 through a mounting plate bolt, the magnetic conductive ring 231 is of a circular ring type tubular structure, the central axis of the magnetic conductive ring 231 coincides with the central axis of the poking ring 21, the magnetic conductive ring 231 is provided with through holes arranged along the axis direction, the guide sleeve 232 is fixedly installed in the through holes, the guide sleeve 232 is of a cylindrical structure, one end of the cylinder is a boss, the boss is limited outside the through holes, and the boss is provided with a bolt or a screw hole for being fixed on the magnetic conductive ring 231.
Each guide rod 223 sequentially passes through the guide sleeve 232, the through hole and the guide sleeve 232 and extends out of the guide sleeve 232, the guide rods 223 can slide on the guide sleeve 232, and the length of each guide rod 223 is larger than that of the magnetic conductive ring 231.
The magnetic ring 231 is used for limiting the sliding of the guide rod 223, so that the guide rod 223 only slides axially, and the guide sleeve 232 is used for reducing sliding friction.
The magnetizing coil 7 is disposed outside the magnetic conductive ring 231.
Example two:
as shown in fig. 6 and 7, on the basis of the first embodiment, the driving part 24 includes a driving member and a connecting rod assembly, the driving end of the driving member is telescopically connected to the connecting rod assembly, and the connecting rod assembly is connected to the push ring assembly.
In this embodiment, the driving piece is a cylinder 241, the middle part of the cylinder 241 is connected to the magnetic conduction plate 4 through a pin shaft, and the cylinder 241 can swing properly to prevent jamming during the stretching process. The connecting rod assembly comprises a joint 242, a poke rod 243, a support rod 244 and an arc-shaped pushing frame 245; the joint 242 is in soft connection with one end of the cylinder 241, and can be a flexible end and a joint of the cylinder respectively connected through a rubber sleeve, so that the joint of the joint 242 and the flexible end of the cylinder 241 can swing properly, and the phenomenon that the joint is blocked due to force action in the stretching process is prevented; the other end of the joint 242 is a U-shaped interface, and two side walls of the U-shaped interface are provided with first kidney-shaped holes which penetrate through the U-shaped interface, and the first kidney-shaped holes are formed along the axial direction of the joint;
the two ends of the poke rod 243 are of a single-hole flat structure, the upper end of the poke rod is connected with a first waist-shaped hole at a U-shaped interface of the joint 242 in a sliding manner through a first pin shaft A, the bottom end of the poke rod is connected with a straight rod of the arc-shaped push frame 245 in a rotating manner through a second pin shaft B, a through slotted hole is formed in the middle of the poke rod, through second waist-shaped holes are formed in two side walls of the slotted hole, and the second waist-shaped hole is formed along; one end of the pillar rod 244 is fixedly installed on the magnetic conduction plate 3 through a bolt or interference fit, the other end of the pillar rod 244 is provided with a single-hole flat structure, the pillar rod 244 is connected with the second waist-shaped hole of the poke rod 243 through a third pin shaft C in a sliding mode, namely, after the single-hole flat structure is inserted into the slot, the single hole is aligned with the second waist-shaped hole, the third pin shaft C sequentially penetrates through the second waist-shaped hole on one side, the single hole and the second waist-shaped hole on the other side, the two ends of the third pin shaft C are fixed and limited through split pins or nuts, and the diameter of the third pin shaft C is smaller than the width of the second waist-shaped hole.
The arc-shaped pushing frame 245 is of a Y-shaped structure, the upper fork of the Y-shaped pushing frame is arc-shaped, the lower part of the Y-shaped pushing frame is a straight rod, the end part of the arc-shaped pushing frame is provided with a circular connecting hole, the end part of the straight rod is provided with a circular connecting hole, the circular connecting holes at the two ends of the arc-shaped pushing frame are fixedly connected with the second frame ring 222 and are connected with the two guide rods 223 above in an interference fit manner or.
Example three:
as shown in fig. 7 and 8, in this embodiment, on the basis of the second embodiment, the magnetic conductive plate 3 is fixedly installed on the bottom plate 6 and can be fixed by bolts, welding, and the like, a U-shaped frame with a downward opening is fixedly installed at the bottom of the metal plate 4, a roller 17 is rotatably installed on the U-shaped frame through a pin, the roller 17 is a roller with a groove, a guide rail 61 is arranged on the bottom plate 6, the guide rail 61 is a structure welded on the bottom plate 61 or a protrusion integrated with the bottom plate 61, and the roller 17 rolls on the guide rail 61 on the bottom plate 6 to move in or out; here, the idler wheels 17, the U-shaped frame and the pin are two and symmetrically connected to the bottom of the magnetic conductive plate 3.
The implementation specifically works as follows:
as shown in fig. 6 and 9, when the end of the steel pipe or the thickened end or the coupling part of the steel pipe reaches the array part of the probe, the air flow enters from the bottom of the left side of the air cylinder 241 under the action of the position switch, the air cylinder rod extends out, the shifting rod 243 is pushed by the joint 241 to form a lever action with the pillar rod 244, the lower end of the shifting rod 243 drives the arc-shaped pushing frame 245 to press the second frame ring 222 leftwards to be close to the right side of the magnetic conductive ring 231, so that the ring 21 is finally shifted to have a leftward pushing force on the inclined plane of the right side of the crank arm 12, the crank arm 12 connecting shaft 15 is pushed to rotate, the array of the probe 11 is driven to be fully opened, and the damage and the impact of the;
when the pipe body part of the steel pipe 5 reaches the array part of the probe 1, the air flow enters from the upper part of the right side of the air cylinder 241 under the action of the position switch, the air cylinder rod retracts into the air cylinder, the poke rod 243 is pulled through the joint 241 to form a lever action with the support rod 244, the lower end of the poke rod 243 drives the arc-shaped push frame 245 to pull out the second frame ring 222 rightwards to drive the poke ring 21 to move rightwards to be separated from the inclined surface part of the crank arm 12, the crank arm 12 rotates around the connecting shaft 15 reversely under the action of the spring 14, and under the action of the first limit surface and the second limit surface, the crank arm 12 presses the probe 11 to a position which is attached to the outer surface of the steel pipe.
The driving part is used for pushing the pushing ring assembly, then the pushing ring 21 is pushed to move along the horizontal axis, all the probes 11 can be reliably opened or closed at the outer surface of the detected steel pipe 5, comprehensive detection on the steel pipe is realized, as long as the moving state of the pushing ring 21 is monitored, the mistaken opening and closing and damage of any probe 11 can not occur, so that the reliability and the stability of the whole machine in the month-old running detection are greatly improved, and the structure is simplest.
The fixing arm 13 can be adjustably installed on the metal plate 4, the diameter of a steel pipe detection area can be adjusted, the detection device can be suitable for steel pipe detection of different diameters, damage and impact of thickened steel pipe ends to an array part of the probe can be avoided, and further impact damage to the array of the probe by steel pipe ends with couplings or threads can be avoided, so that all transverse magnetic flux leakage detection probes 11 are prevented from being damaged by the impact of the steel pipe ends, the service life of the probe 11 is greatly prolonged, the service cycle of the probe is prolonged, the use cost of magnetic flux leakage detection equipment is reduced, and the operation efficiency is improved; guaranteed that all horizontal magnetic leakage test probe can not damaged by the steel pipe end striking, just can not appear two end striking interference signal of steel pipe, improved key technical index such as complete machine detection signal noise ratio and detectivity, satisfied international standard: SN EN ISO10893-3-2011 all technical requirements of automatic seamless full-periphery magnetic flux leakage detection and welding (except submerged arc welding) longitudinal and/or transverse defect detection of ferromagnetic steel pipes.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The opening and closing mechanism of the array probe in the steel pipe transverse defect magnetic flux leakage detection is characterized by comprising probe components which are arranged in a circumferential array mode and an opening and closing mechanism which can enable all the probe components to be opened and closed simultaneously;
the area enclosed by all the probe components is circular, and the area is a steel pipe detection area; the probe assembly comprises a probe, a crank arm and a fixed arm, wherein the fixed arm can be adjustably arranged on the metal plate, one end of the crank arm is rotatably connected with the fixed arm, the probe is fixedly arranged at the other end of the crank arm, and the probe is arranged towards the steel pipe;
the opening and closing mechanism comprises a poking ring, a pushing ring component, a limiting ring component and a driving part, wherein the limiting ring component is fixedly arranged on the magnetic conduction plate, one end of the pushing ring component is connected with the driving part, the other end of the pushing ring component is connected with the poking ring, and the pushing ring component capable of axially and horizontally moving is slidably connected with the limiting ring component;
the central axis of the poking ring is coincided with the central axis of the steel pipe detection area.
2. The opening and closing mechanism of the array probe in the steel pipe transverse defect magnetic flux leakage detection is characterized in that the head of the crank arm is provided with a U-shaped groove, the probe is fixedly arranged in the U-shaped groove, the tail end of the crank arm is connected with the tail end of the fixed arm through a connecting shaft, the tail end of the crank arm is provided with a first limiting surface and a first inclined surface forming an included angle theta with the first limiting surface, and correspondingly, the tail end of the fixed arm is provided with a second limiting surface and a second inclined surface forming an included angle omega with the second limiting surface; the crank arm has two extreme positions, including between first extreme position, the second extreme position, first extreme position is the position of probe and steel pipe surface laminating, and at this moment, first spacing face and the spacing face of second coincide completely, theta + omega contained angle is personally submitted with the second slope to first inclined plane, and the steel pipe surface is kept away from to the second extreme position for the probe, and at this moment, first inclined plane and the coincidence of second inclined plane, first spacing face and the spacing theta + omega contained angle of personally submitting of second.
3. The opening and closing mechanism of the array probe in the transverse defect flux leakage detection of the steel pipe as recited in claim 2, wherein a spring is provided at a joint of the crank arm and the fixed arm, the spring is sleeved at two ends of the connecting shaft, and two ends of the spring are respectively abutted against a corner of the crank arm and a protrusion of the fixed arm.
4. The opening and closing mechanism of the array probe in the steel pipe transverse defect flux leakage detection of claim 1, further comprising an adjusting plate fixed on the metal plate, wherein the adjusting plate is fixedly installed on the metal plate, the fixing arm is provided with a plurality of locking bolts, and the fixing arm is connected with the adjusting plate in a sliding or locking manner.
5. The opening and closing mechanism of the array probe for the magnetic leakage detection of the transverse defect of the steel pipe as recited in claim 1, wherein the limiting ring assembly comprises a magnetic conduction ring and a guide sleeve, the magnetic conduction ring is installed on the magnetic conduction plate through a bolt, the magnetic conduction ring is of a circular ring type tubular structure, the central axis of the magnetic conduction ring coincides with the central axis of the poking circular ring, the magnetic conduction ring is provided with at least three through holes which are circumferentially arranged along the axial direction, and the guide sleeve is fixedly installed in the through holes.
6. The opening and closing mechanism of the array probe in the magnetic leakage detection of the transverse defect of the steel pipe as recited in claim 5, wherein the push ring assembly comprises a first frame ring, a second frame ring and at least three guide rods, the first frame ring and the second frame ring are of the same annular plate structure, the first frame ring and the second frame ring are fixedly connected through the guide rods, and the guide rods are slidably connected in the through holes.
7. The opening and closing mechanism of the array probe in the steel pipe transverse defect flux leakage detection of claim 1, wherein the driving part comprises a driving part and a connecting rod assembly, the driving end of the driving part can be connected with the connecting rod assembly in a telescopic mode, and the connecting rod assembly is connected with the pushing ring assembly.
8. The opening and closing mechanism of the array probe in the magnetic leakage detection of the transverse defect of the steel pipe as recited in claim 7, wherein the driving member is an air cylinder, and the air cylinder is connected to the magnetic conduction plate in a swinging manner.
9. The opening and closing mechanism of the array probe in the steel pipe transverse defect flux leakage detection according to claim 7, wherein the connecting rod assembly comprises a joint, a poke rod, a support rod and an arc-shaped pushing frame, the arc-shaped pushing frame is of a Y-shaped structure, the part of a Y-shaped upper part separating fork is arc-shaped, the lower part of the Y-shaped upper part separating fork is a straight rod, and two ends of the arc-shaped pushing frame are fixedly connected with pushing ring assemblies; one end of the joint, which is far away from the driving piece, is a U-shaped interface, two side walls of the U-shaped interface are provided with first kidney-shaped holes which penetrate through the U-shaped interface, two ends of the poke rod are of a single-hole flat structure, the middle part of the poke rod is provided with a through slotted hole, and two side walls of the slotted hole are provided with second kidney-shaped holes which penetrate through the slotted hole;
the driving end of the driving piece is connected with one end of the connector, one end of the poke rod is connected with the first kidney-shaped hole in a sliding mode through a first pin shaft, the other end of the poke rod is connected with the straight rod of the arc-shaped pushing frame in a rotating mode through a second pin shaft, one end of the support rod is fixedly installed on the magnetic conduction plate, and the other end of the support rod is connected with the second kidney-shaped hole in a sliding mode through a third pin shaft.
10. The opening and closing mechanism of the array probe in the steel pipe transverse defect flux leakage detection according to claim 1, further comprising a bottom plate, wherein the magnetic conduction plate is fixedly installed on the bottom plate, and the bottom of the metal plate is provided with a roller which rolls on the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033915.8A CN111024809A (en) | 2020-01-13 | 2020-01-13 | Opening and closing mechanism of array probe in steel pipe transverse defect magnetic leakage detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033915.8A CN111024809A (en) | 2020-01-13 | 2020-01-13 | Opening and closing mechanism of array probe in steel pipe transverse defect magnetic leakage detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111024809A true CN111024809A (en) | 2020-04-17 |
Family
ID=70202805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010033915.8A Pending CN111024809A (en) | 2020-01-13 | 2020-01-13 | Opening and closing mechanism of array probe in steel pipe transverse defect magnetic leakage detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111024809A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2539178Y (en) * | 2002-05-17 | 2003-03-05 | 常州新远探伤设备有限公司 | Leakage magnetic flaw detector |
| CN204462325U (en) * | 2015-03-20 | 2015-07-08 | 深圳市汇晨电子有限公司 | FPC lights measurement jig simultaneously |
| CN109725052A (en) * | 2019-01-31 | 2019-05-07 | 合肥中大检测技术有限公司 | The supporting mechanism of Magnetosensitive sensor array and steel pipe longitudinal defect leakage magnetic detection device |
-
2020
- 2020-01-13 CN CN202010033915.8A patent/CN111024809A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2539178Y (en) * | 2002-05-17 | 2003-03-05 | 常州新远探伤设备有限公司 | Leakage magnetic flaw detector |
| CN204462325U (en) * | 2015-03-20 | 2015-07-08 | 深圳市汇晨电子有限公司 | FPC lights measurement jig simultaneously |
| CN109725052A (en) * | 2019-01-31 | 2019-05-07 | 合肥中大检测技术有限公司 | The supporting mechanism of Magnetosensitive sensor array and steel pipe longitudinal defect leakage magnetic detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211505331U (en) | Opening and closing mechanism of array probe in steel pipe transverse defect magnetic leakage detection | |
| CN111024809A (en) | Opening and closing mechanism of array probe in steel pipe transverse defect magnetic leakage detection | |
| US4937524A (en) | Rotating eddy current roller head for inspecting tubing | |
| CN107826822B (en) | Winding core locking device for amorphous thin strip full-automatic reel changer | |
| CN211505329U (en) | Anti-adsorption mechanism and steel pipe longitudinal defect magnetic flux leakage detection equipment | |
| CN207973342U (en) | A kind of twisted and released of the cable line all-in-one machine | |
| CN109725052B (en) | Support mechanism of magnetic sensor array and steel pipe longitudinal defect magnetic leakage detection device | |
| CN109668964B (en) | Pipeline scanning frame | |
| CN110006989A (en) | A kind of magnetic fault detection system | |
| CN112007999A (en) | Centering and clamping device for bending and forming flange pipe fitting | |
| CN202296620U (en) | Pipe arranging device of pipe winder | |
| CN111024808A (en) | Anti-adsorption mechanism and steel pipe longitudinal defect magnetic flux leakage detection equipment | |
| CN115922163A (en) | Auxiliary equipment for cutting groove with adjustable pipe diameter | |
| CN116576335A (en) | Pipeline flaw detection mechanism and detection method thereof and peristaltic pipeline detection device | |
| CN209387826U (en) | A kind of switch fatigue test machine | |
| CN115015373A (en) | Magnetic attraction detection device for bridge U-rib weld defects | |
| CN111137741A (en) | Horn tube wire bonder's case parallel slide mechanism that traverses | |
| CN109884190B (en) | Electromagnetic ultrasonic transducer applied to defect detection of small-caliber pipe | |
| CN203791858U (en) | Device for automatically detecting weld joint of low-pressure welding rotor of steam turbine for nuclear power station | |
| US4163590A (en) | Universal floating guide means | |
| CN113581776B (en) | Quick detection tilter in cheese transportation | |
| CN219583562U (en) | Guiding and driving locking hook with automatic locking function for radial tyre building machine | |
| CN214562465U (en) | Automatic hose feeding device of hose shoulder injecting machine with color code alignment positioning mechanism | |
| CN106248783B (en) | Large-scale closed magnetic yoke type magnetic particle flaw detector for railway wheel set | |
| CN219429541U (en) | Traction device of tire crane current collection trolley |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |