CN111751441A - In-service drill rod detection device and detection method - Google Patents
In-service drill rod detection device and detection method Download PDFInfo
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- CN111751441A CN111751441A CN202010720392.4A CN202010720392A CN111751441A CN 111751441 A CN111751441 A CN 111751441A CN 202010720392 A CN202010720392 A CN 202010720392A CN 111751441 A CN111751441 A CN 111751441A
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- 238000001514 detection method Methods 0.000 title claims abstract description 157
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000004140 cleaning Methods 0.000 claims abstract description 19
- 238000010408 sweeping Methods 0.000 claims abstract description 18
- 238000005553 drilling Methods 0.000 claims abstract description 11
- 230000002159 abnormal effect Effects 0.000 claims abstract description 6
- 238000007664 blowing Methods 0.000 claims abstract description 5
- 239000000523 sample Substances 0.000 claims description 72
- 230000007547 defect Effects 0.000 claims description 50
- 230000005284 excitation Effects 0.000 claims description 18
- 239000003973 paint Substances 0.000 claims description 17
- 230000004907 flux Effects 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000010926 purge Methods 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 5
- 230000002950 deficient Effects 0.000 claims description 3
- 239000006249 magnetic particle Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011012 sanitization Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0278—Arrangement or mounting of spray heads
-
- B08B1/12—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/413—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material for metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/44—Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
- B41J3/445—Printers integrated in other types of apparatus, e.g. printers integrated in cameras
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
-
- 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
- G01N27/84—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 by applying magnetic powder or magnetic ink
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
Abstract
The utility model provides an at labour drilling rod detection device, including magnetic leakage detection module and frame, its frame is the circumference shape, and magnetic leakage detection module installs on the frame its characterized in that: the device further comprises: the device comprises a cleaning and blowing module, an outer diameter measuring module and a marking module; the cleaning and sweeping module, the outer diameter measuring module and the marking module are all installed on the frame, a crawler executing mechanism on the cleaning and sweeping module can drive the whole device to advance, the cleaning and sweeping module cleans the surface of a drill rod in the advancing process, the magnetic leakage detecting module detects magnetic leakage, the outer diameter measuring module measures the outer diameter, and abnormal parts are marked through the marking module. The invention can automatically and simultaneously clean and derust the surface of the drill rod, detect magnetic leakage, measure the pipe diameter, mark and the like, and solves the problems of complicated manual operation steps, low precision, time and labor waste.
Description
Technical Field
The invention relates to an in-service drill rod detection device and a detection method.
Background
Need detect after using a period at labour drilling rod, the detection project includes that the magnetic leakage detects, body external diameter measures etc. in time discovers unqualified drilling rod through detecting, avoids drilling operation in-process drilling rod fracture thorn hourglass accident to appear, reduces loss of property, guarantee operation safety.
In the actual testing process, to the magnetic leakage detection item, the magnetic leakage detection dolly walks on unsettled supporting drilling rod, installs excitation coil and magnetic leakage signal probe on the magnetic leakage detection dolly, and longitudinal magnetic field is applyed for the drilling rod to excitation coil, and the magnetic leakage signal of magnetic leakage signal probe detection pipe body surface to carry out real-time curve display on the operation computer. Aiming at the outer diameter measurement project of the pipe body, according to the requirement of the industry standard, an outer diameter gauge is adopted to measure the outer diameter in the whole length range of the drill rod, when the outer diameter gauge is dragged along the surface of the drill rod, the drill rod is rotated, and the drill rod rotates 360 degrees every 1.5m of inspection space. During the measurement of the outer diameter, all the contact surfaces of the outer diameter gauge are ensured to be in a contact state. At present, the following problems exist in the detection process:
firstly, in the testing process, if the drilling rod does not have the sanitization in advance, especially the drilling rod surface glues very thick earth or rust dirt, very easily makes the inspection trolley walking difficult, and the probe surface piles up the iron and cuts the dust, influences the signal evaluation that detects, the condition of erroneous judgement appears even.
Secondly, in the process of measuring the outer diameter, the drill rod should rotate 360 degrees at every inspection interval of 1.5m, the labor intensity and the operation difficulty of detection personnel are high, and the detection is easy to miss.
And in the process of measuring the outer diameter, all contact surfaces of the outer diameter gauge are in a contact state, and the contact surfaces are easy to wear, so that the measurement precision is influenced.
Fourthly, when the magnetic flux leakage detection process encounters a defect signal exceeding a threshold value, the trolley is required to stop detection, and then manual identification is carried out at the defect signal. Or in the process of measuring the outer diameter, when the part with the abnormal outer diameter value is encountered, manual marking is needed, and the working efficiency is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an in-service drill rod detection device, which can automatically and simultaneously clean and derust the surface of a drill rod, detect magnetic leakage, measure the pipe diameter, mark and the like, and solve the problems of complicated manual operation steps, low precision, time consumption and labor consumption.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the utility model provides an at labour drilling rod detection device, including magnetic leakage detection module and frame, its frame is the circumference shape, and magnetic leakage detection module installs on the frame its characterized in that: the device further comprises: the device comprises a cleaning and blowing module, an outer diameter measuring module and a marking module;
wherein the clearance sweeps the module and includes: the crawler driving device comprises a steel wire brush, a compressed air purging nozzle, a crawler executing mechanism and a crawler motor, wherein the crawler motor is fixedly installed on the side face of a frame;
the magnetic leakage detection module includes: the device comprises a local defect detection probe bracket, a local defect detection probe, a magnetic flux leakage supporting plate, a sectional area change detection probe bracket and an excitation coil; the excitation coil surrounds the frame for a circle and is fixed on the frame, the magnetic leakage supporting plate is fixed on the excitation coil, and the two sides of the magnetic leakage supporting plate are respectively fixed with a local defect detection probe bracket and a sectional area change detection probe bracket; the plurality of local defect detection probes are arranged on the local defect detection probe bracket through snap springs and are attached to the drill rod to be detected; the 4 sectional area change detection probes are respectively and fixedly arranged on the sectional area change detection probe bracket;
the outer diameter measurement module includes: the laser sensor support is fixedly arranged on the outer diameter support plate, and the outer diameter support plate is connected with the frame;
the marking module includes: the paint nozzle is fixed on the nozzle control mechanism and is circumferentially and uniformly distributed, and the nozzle control mechanism is fixedly installed on the outer diameter supporting plate.
The nozzle control mechanism and the round hole of the laser sensor support are coaxial so as to realize the coaxiality of the layout of the paint nozzle and the laser sensor.
The local defect detection probe and the sectional area change detection probe are composed of Hall elements, are respectively and uniformly distributed in a circumference way, and are coaxial with the drill rod.
The detection method for detecting the in-service drill rod by using the detection device comprises the following steps:
(1) after the drill rod is suspended and supported, the detection device is sleeved on the drill rod, the local defect detection probe is attached to the surface of the drill rod, and the whole detection device is supported; ensuring that the local defect detection probe, the sectional area change detection probe and the laser sensor are respectively uniformly distributed in a circumference way and have the same axle center with the drill rod;
(2) the excitation coil is connected with current, and a longitudinal magnetic field is applied to the drill rod;
(3) the crawler executing mechanism drives the whole detection device to move forwards on the surface of the drill rod, in the process of moving forwards, the cleaning and sweeping module is positioned at the foremost end of the device, and the cleaning and sweeping module is matched with the compressed air sweeping nozzle through a steel wire brush on the cleaning and sweeping module to remove clay or rust attached to the drill rod;
(4) in the forward process, a local defect detection probe and a sectional area change detection probe of the magnetic flux leakage detection module detect the defects on the surface of the drill rod, signals are transmitted to the controller, the controller controls a nozzle control mechanism of the marking module to act, and the paint nozzle identifies the defective part and gives an alarm for reminding;
(5) the laser sensor of the outer diameter measuring module automatically measures a plurality of outer diameter values of the section of the drill rod, and transmits signals to the controller for the outer diameter values exceeding a threshold value, the controller controls the nozzle control mechanism of the marking module to act, and the paint nozzle identifies the abnormal part of the outer diameter and gives an alarm;
(6) when the crawler executing mechanism drives the whole set of detection device to move forward on the surface of the drill rod to a position close to a thickened area of the drill rod, the crawler executing mechanism stops moving forward, the excitation coil is connected with reverse current, and the crawler executing mechanism drives the whole set of detection device to move backward and demagnetizes the drill rod. And stopping moving when the drill rod retreats to a position close to the thickened belt of the drill rod, and taking the detection device out of the drill rod.
(7) And after the drill pipe detection device returns, rechecking all the marked parts by means of ultrasonic detection, magnetic particle detection and the like, further confirming defects and providing a basis for grading evaluation of the drill pipe body.
(8) In the whole detection process, all detection signals are transmitted to the operation display screen, and data such as pipe body defects, sectional area changes and outer diameter values are dynamically checked on the operation display screen in real time.
The laser sensors surround a circle which is coaxial with the drill rod and has the diameter of D1, the laser sensors are evenly distributed in the circumference, each laser sensor and the laser sensor which is opposite form a pair, the sensors respectively measure the distances S1 and S2 between the sensors and the surface of the drill rod, and the corresponding outer diameter D2= D1-S1-S2 of the drill rod is determined.
After the technical scheme is adopted, the invention has the beneficial effects that:
(1) the invention integrates the magnetic flux leakage detection function, the outer diameter measurement function and the automatic identification function on the detection device, thereby improving the working efficiency and reducing the possibility of leakage detection in the outer diameter measurement;
(2) the detection device has the function of removing clay or rust attached to the drill rod, so that the walking stability of the detection device is improved, and the detection precision is improved;
(3) the invention adopts the laser sensor to measure the diameter, and overcomes the defect of contact surface abrasion in the measuring process of the traditional outside diameter gauge through non-contact measurement.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a schematic structural view of a cleaning and purging module;
FIG. 3 is a schematic structural view of a magnetic flux leakage detection local defect detection probe;
FIG. 4 is a schematic structural view of a magnetic flux leakage detection probe for detecting sectional area variation;
FIG. 5 is a schematic structural view of an outer diameter measuring module;
fig. 6 is a schematic structural diagram of a marking module.
The labels in the figure are:
1-a steel wire brush; 2-compressed air purging nozzle; 3-a crawler executing mechanism; 4-a crawler motor; 5-local defect detection probe support; 6-local defect detection probe; 7-a magnetic leakage support plate; 8-a sectional area change detection probe; 9-sectional area change detection probe bracket; 10-a field coil; 11-a laser sensor; 12-a laser sensor holder; 13-an outer diameter support plate; 14-a paint nozzle; 15-a nozzle control mechanism; 16-a frame; 17-drill rod.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings and examples, it being understood that the examples described are only some, but not all, of the examples of the invention.
As shown in fig. 1-6, an in-service drill pipe inspection device includes: the magnetic flux leakage detection device comprises a cleaning and sweeping module, a magnetic flux leakage detection module, an outer diameter measurement module, a marking module and the like, wherein the cleaning and sweeping module comprises a steel wire brush 1, a compressed air sweeping nozzle 2, a crawler executing mechanism 3 and a crawler motor 4, the crawler motor 4 is installed and fixed on the side face of a frame 16, one end of the crawler executing mechanism 3 is fixed at the end part of the frame 16, the other end of the crawler executing mechanism is fixed with the compressed air sweeping nozzle 2, and the steel wire brush 1 is fixed at the front end of the compressed air sweeping nozzle 2. The steel brush 1 is wrapped on the surface of the drill rod 17 in a whole circle and used for cleaning clay or rust attached to the drill rod 17, the compressed air purging nozzle 2 is used for purging dust on the surface of the drill rod 17, the crawler motor 4 drives the crawler executing mechanism 3 to move, and the crawler executing mechanism 3 drives the whole detection device to move forwards or backwards on the surface of the drill rod 17. The steel wire brush 1 is connected with the compressed air blowing nozzle 2, the compressed air blowing nozzle 2 is connected with the crawler executing mechanism 3, and the crawler motor 4 is installed and fixed on the side surface of the frame 16.
The magnetic leakage detection module is composed of a local defect detection probe bracket 5, a local defect detection probe 6, a magnetic leakage supporting plate 7, a sectional area change detection probe 8, a sectional area change detection probe bracket 9, an excitation coil 10 and a frame 16. The excitation coil 10 surrounds the frame 16 for a circle and is fixed on the frame, the magnetic leakage supporting plate 7 is fixed on the excitation coil 10, and the local defect detection probe bracket 5 and the sectional area change detection probe bracket 9 are respectively fixed on two sides of the magnetic leakage supporting plate 7; the local defect detection probes 6 are arranged on the local defect detection probe bracket 5 through clamp springs and are tightly attached to a drill rod to be detected; the 4 sectional area change detection probes 8 are respectively and fixedly arranged on a sectional area change detection probe bracket 9; the excitation coil 10 can apply a longitudinal magnetic field to the drill rod 17, the local defect detection probe 6 can detect defects such as cracks, corrosion pits and grooves of the drill rod 17, and the sectional area change detection probe 8 can detect sectional area changes of the drill rod 17. The local defect detection probe 6 and the sectional area change detection probe 8 are composed of hall elements, are circumferentially and uniformly distributed, and are coaxial with the drill rod 17. The local defect detection probes 6 are respectively fixedly arranged on the local defect detection probe bracket 5 and have elasticity in the radial direction so as to adapt to the change of the sectional area of the drill rod, and the local defect detection probes 6 are tightly attached to the surface of the drill rod in the detection process. The 4 sectional area change detection probes 8 are respectively and fixedly installed on the sectional area change detection probe bracket 9, the local defect detection probe bracket 5 and the sectional area change detection probe bracket 9 are respectively and fixedly installed on the magnetic leakage supporting plate 7, and the circular holes of the local defect detection probe bracket 5 and the sectional area change detection probe bracket 9 are coaxial in the installation process so as to realize the coaxial layout of the local defect detection probe 6 and the sectional area change detection probe 8. The magnetic leakage supporting plate 7 is fixedly installed on the exciting coil 10, and the exciting coil 10 is connected with the frame 16. The frame 16 protects the components of the magnetic flux leakage detection module, the outer diameter measurement module and the marking module, and avoids being collided and damaged by the outside.
The outer diameter measuring module comprises laser sensors 11, a laser sensor support 12 and an outer diameter support plate 13, wherein the laser sensors 11 are fixedly arranged on the laser sensor support 12 and are respectively and uniformly distributed in a circumferential manner, the laser sensor support 12 is fixedly arranged on the outer diameter support plate 13, and the outer diameter support plate 13 is connected with a frame 16; the laser sensor bracket 12 and the cross-sectional area change detection probe bracket have the same axis in the round hole during the installation process, so that the laser sensor 11 and the cross-sectional area change detection probe 8 are arranged coaxially. The laser sensors 11 enclose a circle which is coaxial with the drill rod 17 and has the diameter of D1, the circle is evenly distributed, each laser sensor 11 and the laser sensor 11 which is opposite to each other form a pair, the distance S1 and the distance S2 between the pair of sensors and the surface of the drill rod 17 are respectively measured by the pair of sensors, and the corresponding outer diameter D2= D1-S1-S2 of the drill rod 17 is determined. On the same section, N/2 outer diameter values can be obtained, and the outer diameter values provide basis for grading evaluation of the pipe body of the drill pipe 17.
The marking module consists of a paint nozzle 14 and a nozzle control mechanism 15. A group of paint nozzles 14 are fixedly arranged on a nozzle control mechanism 15, and are respectively and uniformly distributed in a circumference, and the nozzle control mechanism 15 is fixedly arranged on an outer diameter support plate 13. The nozzle control mechanism 15 and the circular hole of the laser sensor support 12 are coaxial, so that the paint nozzle 14 and the laser sensor 11 are coaxial in layout. When the magnetic flux leakage detection module and the outer diameter measurement module detect a signal exceeding a threshold value, the nozzle control mechanism 15 acts, and the paint nozzle 14 sprays paint on the defect part to indicate a mark.
After various collected signals are processed, the signals are displayed on an operation display screen in real time, and when the signals exceed a threshold value, the detection device gives an alarm.
The in-service drill pipe detection method comprises the following steps:
(1) after the drill rod 17 is suspended and supported, the drill rod detection device is sleeved on the drill rod 17, and the local defect detection probe 6, the sectional area change detection probe 8 and the laser sensor 11 are respectively and uniformly distributed in a circumference manner and are coaxial with the drill rod 17.
(2) The excitation coil 10 is energized to apply a longitudinal magnetic field to the drill rod 17.
(3) The crawler executing mechanism 3 drives the whole set of detection device to move forwards on the surface of the drill rod 17, and in the process of moving forwards, the steel wire brush 1 of the cleaning and sweeping module is matched with the compressed air sweeping nozzle 2 to remove clay or rust attached to the drill rod 17.
(4) In the forward process, the local defect detection probe 6 of the magnetic flux leakage detection module finds local defects such as cracks, corrosion pits exceeding a threshold value or grooving, the nozzle control mechanism 15 of the marking module acts, and the paint nozzle 14 identifies defective parts and gives an alarm for reminding. The sectional area change detection probe 8 finds the sectional area change exceeding the threshold value, the nozzle control mechanism 15 of the marking module acts, and the paint nozzle 14 marks the sectional area change part and gives an alarm for reminding.
(5) In the advancing process, the laser sensor 11 of the outer diameter measuring module automatically measures a plurality of outer diameter values of the section of the drill rod 17, and the outer diameter values provide a basis for grading evaluation of the pipe body of the drill rod 17. And for the outer diameter value exceeding the threshold value, the nozzle control mechanism 15 of the marking module acts, and the paint nozzle 14 marks the abnormal part of the outer diameter and gives an alarm for reminding.
(6) When the crawler executing mechanism 3 drives the whole set of detection device to move forward on the surface of the drill rod 17 to a position close to a thickened belt of the drill rod 17, the crawling device stops moving forward, the excitation coil 10 is connected with reverse current, and the crawler executing mechanism 3 drives the whole set of detection device to move backward and demagnetizes the drill rod 17. And when the drill rod 17 retreats to the position close to the thickened belt of the drill rod 17, the movement is stopped, and the detection device is taken out from the drill rod 17.
(7) And after the drill rod detection device returns, rechecking all the marked parts by means of ultrasonic detection, magnetic particle detection and the like, further confirming defects and providing a basis for grading evaluation of the pipe body of the drill rod 17.
(8) In the whole detection process, all detection signals are transmitted to the operation display screen, and data such as pipe body defects, sectional area changes and outer diameter values are dynamically checked on the operation display screen in real time.
The crawler executing mechanism on the cleaning and purging module can drive the whole device to move forwards, the cleaning and purging module cleans the surface of the drill rod in the advancing process, the magnetic leakage detection module detects magnetic leakage, the outer diameter measurement module measures the outer diameter, and abnormal parts are marked through the marking module. The invention can automatically and simultaneously clean and derust the surface of the drill rod, detect magnetic leakage, measure the pipe diameter, mark and the like, and solves the problems of complicated manual operation steps, low precision, time and labor waste.
While embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be taken as limiting the invention.
Claims (8)
1. The utility model provides an at labour drilling rod detection device, including magnetic leakage detection module and frame, its frame is the circumference shape, and magnetic leakage detection module installs on the frame its characterized in that: the device further comprises: the device comprises a cleaning and blowing module, an outer diameter measuring module and a marking module;
wherein the clearance sweeps the module and includes: the crawler driving device comprises a steel wire brush, a compressed air purging nozzle, a crawler executing mechanism and a crawler motor, wherein the crawler motor is fixedly installed on the side face of a frame;
the magnetic leakage detection module includes: the device comprises a local defect detection probe bracket, a local defect detection probe, a magnetic flux leakage supporting plate, a sectional area change detection probe bracket and an excitation coil; the excitation coil surrounds the frame for a circle and is fixed on the frame, the magnetic leakage supporting plate is fixed on the excitation coil, and the two sides of the magnetic leakage supporting plate are respectively fixed with a local defect detection probe bracket and a sectional area change detection probe bracket; the plurality of local defect detection probes are arranged on the local defect detection probe bracket through snap springs and are attached to the drill rod to be detected; the 4 sectional area change detection probes are respectively and fixedly arranged on the sectional area change detection probe bracket;
the outer diameter measurement module includes: the laser sensor support is fixedly arranged on the outer diameter support plate, and the outer diameter support plate is connected with the frame;
the marking module includes: the paint nozzle is fixed on the nozzle control mechanism and is circumferentially and uniformly distributed, and the nozzle control mechanism is fixedly installed on the outer diameter supporting plate.
2. The in-service drill pipe inspection device of claim 1, wherein: the nozzle control mechanism and the round hole of the laser sensor support are coaxial so as to realize the coaxiality of the layout of the paint nozzle and the laser sensor.
3. The in-service drill pipe inspection device of claim 1, wherein: the local defect detection probe and the sectional area change detection probe are composed of Hall elements, are respectively and uniformly distributed in a circumference way, and are coaxial with the drill rod.
4. A method of testing using the test apparatus of any of the preceding claims, wherein: the method comprises the following steps:
(1) after the drill rod is suspended and supported, the detection device is sleeved on the drill rod, the local defect detection probe is attached to the surface of the drill rod, and the whole detection device is supported; ensuring that the local defect detection probe, the sectional area change detection probe and the laser sensor are respectively uniformly distributed in a circumference way and have the same axle center with the drill rod;
(2) the excitation coil is connected with current, and a longitudinal magnetic field is applied to the drill rod;
(3) the crawler executing mechanism drives the whole detection device to move forwards on the surface of the drill rod, in the process of moving forwards, the cleaning and sweeping module is positioned at the foremost end of the device, and the cleaning and sweeping module is matched with the compressed air sweeping nozzle through a steel wire brush on the cleaning and sweeping module to remove clay or rust attached to the drill rod;
(4) in the forward process, a local defect detection probe and a sectional area change detection probe of the magnetic flux leakage detection module detect the defects on the surface of the drill rod, signals are transmitted to the controller, the controller controls a nozzle control mechanism of the marking module to act, and the paint nozzle identifies the defective part and gives an alarm for reminding;
(5) the laser sensor of the outer diameter measuring module automatically measures a plurality of outer diameter values of the section of the drill rod, signals are transmitted to the controller for the outer diameter values exceeding a threshold value, the controller controls the nozzle control mechanism of the marking module to act, and the paint nozzle identifies the outer diameter abnormal part and gives an alarm for reminding.
5. The in-service drill pipe detection device detection method according to claim 4, wherein the in-service drill pipe detection device comprises the following steps: the device further comprises the following steps:
(6) when the crawler executing mechanism drives the whole set of detection device to move forward on the surface of the drill rod to a position close to a thickened area of the drill rod, the crawler executing mechanism stops moving forward, the excitation coil is connected with reverse current, and the crawler executing mechanism drives the whole set of detection device to move backward and demagnetizes the drill rod.
6. Stopping moving when the drill rod retreats to a position close to the thickened belt of the drill rod, and taking the detection device out of the drill rod;
(7) and after the drill pipe detection device returns, rechecking all the marked parts by means of ultrasonic detection, magnetic particle detection and the like, further confirming defects and providing a basis for grading evaluation of the drill pipe body.
7. In the whole detection process, all detection signals are transmitted to the operation display screen, and data of pipe body defects, sectional area changes and outer diameter values are dynamically checked on the operation display screen in real time.
8. The in-service drill pipe detection device detection method according to claim 4, wherein the in-service drill pipe detection device comprises the following steps: in the step 5, the laser sensors surround a circle which is coaxial with the drill rod and has the diameter of D1, the laser sensors are uniformly distributed in the circumference, each laser sensor and the laser sensor which is opposite form a pair, the distance S1 and the distance S2 between the laser sensor and the surface of the drill rod are respectively measured by the pair of the laser sensors, and the corresponding outer diameter of the drill rod is D2= D1-S1-S2.
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