CN103604022A - High-precision inner detecting device for seabed oil and gas pipeline flaws - Google Patents
High-precision inner detecting device for seabed oil and gas pipeline flaws Download PDFInfo
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- CN103604022A CN103604022A CN201310598517.0A CN201310598517A CN103604022A CN 103604022 A CN103604022 A CN 103604022A CN 201310598517 A CN201310598517 A CN 201310598517A CN 103604022 A CN103604022 A CN 103604022A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
- F16L55/32—Constructional aspects of the propulsion means, e.g. towed by cables being self-contained
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/48—Indicating the position of the pig or mole in the pipe or conduit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
A high-precision inner detecting device for seabed oil and gas pipeline flaws is characterized in that an anti-collision head and a front power packing cup are connected to the front end of a body support shaft, the rear of the front power packing cup is connected with a floating magnetization detecting block through a hinge mechanism, and a lateral jacking spring is disposed on each of the front side and the rear side of the floating magnetization detecting block to form a floating magnetization circuit and a magnetic flux leakage detecting block unit. A finger probe is disposed on the floating magnetization detecting block. A guide groove and a limit ring are arranged at the rear end of the body support shaft. A rear power packing cup is disposed at the rear of the guide groove. The front packing cup and the rear packing cup jointly form a power drive system. A battery pack unit and an electronic recorder are respectively disposed at the front and the rear of a seal cabin in the body support shaft in an opposite insertion manner. A detector odometer wheel unit is mounted at the tail of the body support shaft. By the floating magnetization detecting structure, online inner detection of oil and gas pipeline flaws under complex working conditions can be well achieved.
Description
Technical field
The present invention relates to sea-bottom oil-gas pipeline detection technique field, be specifically related to detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy.
Background technique
Follow the development of marine oil and gas exploitation technology, supporting sea-bottom oil-gas conveyance conduit technology is also constantly improving, and the safety of offshore oil pipeline is the key technology in this field.Because benthal oil-gas pipeline and land oil-gas pipeline exist very large different: the first has a big risk, and this is that cost is high because ocean petroleum pipeline difficulty of construction is large, once reveal or blocking large to environmental disruption; It two is that operating mode is complicated, and sea-bottom oil-gas pipeline is generally laid according to seabed physical features, and particularly on pipeline, having erect riser, the elbow on platform during lower bolster is 1.5D radius of turn.This just requires the online internal detector using that detects of offshore oil pipeline to have higher passing capacity and pipe deforming adaptive capacity.Existing oil and gas pipes defect detector structural feature is fixed magnetization mandrel and magnetic conduction steel brush wheel form.Its representative is that application number is 200710118862.4 patent " high definition mechanical system of pipe leakage detector ", owing to adopting fixed magnetization mandrel form, make detector heavier, the diameter of non-deformable part and length also can be larger, are not suitable for being applied in erect riser and tight-turning offshore oil defect of pipeline detecting.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy, adopt floating type magnetization detection architecture, solved well the online interior test problems of oil and gas pipes defect under complex working conditions.
In order to achieve the above object, the technological scheme that the present invention takes is:
Detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy, comprise body back shaft 2, body back shaft 2 front ends connect anti-raming and front power leather cup 1, floating hinge mechanism 3 before front power leather cup 1 connects below, front floating hinge mechanism 3 detects pieces 5 with two groups of magnetization of floating and is connected, the every group of magnetization of floating detect piece 5 sides before and after installation sides to jack-up spring 4, by jack-up spring 4, will float and magnetize detection piece 5 and open, form relocatable magnetization cycle and Magnetic Flux Leakage Inspecting module unit; The magnetization detection piece 5 that floats is installed finger probe 6 above, and the rear portion that unsteady magnetization detects piece 5 is slip form, in the rear end of body back shaft 2, guiding groove and limited ring is installed, and the unsteady magnetization of constraint detects sideshake and the amount of moving up and down of piece 5; Power leather cup 9 after install at the rear portion of guiding groove, front and back power leather cup has formed power-driven system jointly; Before and after the interior seal hatch of body back shaft 2, to inserting, cell bag unit 7 and electronic recorder 8 are installed respectively, the electrode pair of cell bag unit 7 and electronic recorder 8 is inserted to electronic recorder 8 and is powered on; At body back shaft 2 afterbodys, detector mileage wheel unit 10 has been installed.
Described unsteady magnetization detects piece 5 and comprises magnet case 19, front twisted branch axle 11 is placed in magnet case 19 front end axis holes, front twisted seat 18 is bolted to magnet case 19 front ends by interior angle, high-strength magnet 14 is placed on magnet case 19 tops, fixing by magnetic pole protection apron 12, the middle magnetic pole beam 13 that uses is protected, magnetic pole protection apron 12 is fixed on front twisted seat 18 and magnet case 19, finger probe twisted branch seat 15 is fixed on magnet case 19, finger probe 16 is fixed on finger probe twisted branch seat 15, finger probe 16 is equipped with probe Line concentrator 21 below, magnetic pole internal stop 17 is fixed on after finger probe 16, in the bottom of magnet case 19, be fixed with wiring casing 20, both sides live conductor sheet 22 and spring base hole 23, guide runner 24 after magnet case 19 afterbodys are fixing, each assembly forms whole centered by magnet case 19.
Described mileage wheel unit 10 comprises swing arm 27, swing arm 27 one end are connected with hinge base 25 by bearing pin, the other end is provided with mileage wheel 29, rotating coder 28 is positioned at mileage and takes turns 29 axis holes, stretched spring 26 one end connect swing arm 27, and the other end connects hinge base 25, and stretched spring 26 is by swing arm 27 pull-ups, make mileage wheel 29 compress metal pipe-wall, with detection device, in pipeline, move.
Described front floating hinge mechanism 3 is double-twisted structure, by rotational slide hinge arms and rotating rocker, formed, wherein double-twisted structure hinge arms lower end hinge moves forward and backward in the sliding-groove of fixing twisted seat, the matching gap of the sliding-groove of hinge and fixedly twisted seat is 0.50～1 millimeter, the fixedly twisted seat of front floating hinge mechanism 3 is fixed on the mounting point of body back shaft 2, the hinge arms of double-twisted structure is U-shaped structure, the sideshake of hinge arms and fixedly twisted seat is 0.50～1 millimeter, fixedly is rotating in twisted seat rocking bar one end of double-twisted structure, the other end hinge arms is connected, the hinge axis hole at rocking bar two ends is Spielpassung with coordinating of hinge, gap is 0.10～0.20 millimeter, the sideshake of rocking bar and fixedly twisted seat is 0.50～1 millimeter.
The side installation side that described unsteady magnetization detects piece 5 is to jack-up spring cupport structure, the every group of magnetization of floating detects piece 5 and coordinates front floating hinge mechanism 3 and rear guide chute structure, side is with the mutual jack-up of two groups of front and back jack-up spring 4, specifically at magnet case side arrangement side direction jack-up spring base hole, jack-up spring 4 bottom surfaces, holddown spring seat hole, mounting spring directional post in spring base hole, spring directional post and spring base hole are to 4 two guiding of jack-up spring and position-limiting action, prevent that jack-up spring 4 from deviating from, mounting spring directional post in spring base hole, spring directional post and spring inside diameter gap are 0.5～1 millimeter, the gap of spring base hole and spring outer diameter is 1～2 millimeter.
Stainless steel platen is installed in described front power leather cup 1 and rear power leather cup 9 outsides, front power leather cup 1 and rear power leather cup 9 are pressed on the leather cup attachment face of body back shaft 2, and the front and back mounting distance of front power leather cup 1 and rear power leather cup 9 is 1～1.5 times of application internal diameter of the pipeline.
The sealing of described cell bag unit 7 and the interior seal hatch of body back shaft 2 adopt end to axial two seals form, sealing medium is O type rubber seal, twice lanyard before and after cell bag unit 7 drum surfaces paste, lanyard material is teflon.
The sealing of described electronic recorder 8 and the interior seal hatch of body back shaft 2 adopt end to axial two seals form, sealing medium is O type rubber seal, twice lanyard before and after electronic recorder 8 drum surfaces paste, lanyard material is teflon.
Described rear power leather cup 9 attachment faces have cable passing hole, the cable of finger probe 6 synthetic cable and cable plug after the magnetization detection piece 5 probe Line concentrator doublings of floating are processed is inserted in by this cable-through hole on the cable socket of built-in inspection electronic recorder bared end, connects and measures and record circuit.
Described cable plug and cable socket are withstand voltage rubber plug under water, socket, and quality of rubber materials is nitrile rubber, and pressure resistance is 0～20 MPa under water.
Compare with fixed magnetization mandrel type detection device, pipeline passing capacity of the present invention greatly increases, can be by having more large deformation and more tight-turning pipeline, also because floating structure compared with fixed magnetization mandrel type lightweight construction, so more adapt to the marine oil and gas pipeline defects detection there is vertical pipeline section.
The present invention realizes floating type magnetization and detection, and this structural type is leakage magnetic detection device in monomer floating type pipeline.To drive function, magnetization measurement function and electronic recorder, cell bag and travel range metering installation consist of monomer device, have at utmost simplified detector joint number and length.In actual defect inspection engineering, adapt to ocean platform work surface narrow and small, launch and reclaim simple job requirements.In this pipeline, leakage magnetic detection device has been got rid of the transition shaft coupling existing in multi-section structure and has been connected the unsteady attitude factor causing, and pipeline passing capacity is strengthened greatly.
Accompanying drawing explanation
Fig. 1 is expansion sectional view of the present invention.
Fig. 2 is the structural representation that the unsteady magnetization of the present invention detects module unit.
Fig. 3 is the structural representation of mileage wheel unit 10 of the present invention.
Embodiment
Below in conjunction with drawings and Examples, describe the present invention in detail, the interior detection device of 18 cun (457 millimeters) the floating type sea-bottom oil-gas pipeline defect highi degree of accuracy of take is example explanation.
In 18 cun of floating type sea-bottom oil-gas pipeline defect highi degree of accuracy, detection device is whole long 871 millimeters, wherein fixed body length is 803 millimeters, the magnetization of floating detects 450 millimeters of piece 5 rising maximum diameters, the magnetization of floating detects 428 millimeters of piece 5 working diameters, the magnetization of floating detects piece 5 and shrinks 320 millimeters of minimum diameters, 315 millimeters of the maximum fixed body diameters of detection device, 260 kilograms of detection device overall weight.
With reference to Fig. 1, in 18 cun of floating type sea-bottom oil-gas pipeline defect highi degree of accuracy, detection device comprises body back shaft 2, take body back shaft 2 as supporting, and body back shaft 2 front ends connect anti-raming and front power leather cup 1, floating hinge mechanism 3 before front power leather cup 1 connects below; Front floating hinge mechanism 3 tangles two groups of magnetization of floating and detects pieces 5, the every group of magnetization of floating detect piece 5 sides before and after installation sides to jack-up spring 4, by jack-up spring 4, will float and magnetize detection piece 5 and open, form relocatable magnetization cycle and Magnetic Flux Leakage Inspecting module unit; The magnetization of floating detects piece 5 finger probe 6 is installed above; In order to guarantee the magnetization detection piece 5 unsteady reliabilities of being out of shape of floating, the rear portion of the moving magnetization detection of structure floating piece 5 is slip form, at the rear end of body back shaft 2 installation guiding groove and limited ring, has retrained sideshake and the amount of moving up and down of unsteady magnetization detection piece 5; Power leather cup 9 after install at the rear portion of guiding groove, front and back power leather cup has formed the power-driven system of detection device jointly; Before and after the interior seal hatch of body back shaft 2, to inserting, cell bag unit 7 and electronic recorder 8 have been installed respectively, the electrode pair of cell bag unit 7 and electronic recorder 8 is inserted to electronic recorder 8 and is powered on; At body back shaft 2 afterbodys, detector mileage wheel unit 10 has been installed.
With reference to Fig. 2, the magnetization of floating detects piece 5 and comprises magnet case 19, front twisted branch axle 11 is placed in magnet case 19 front end axis holes, front twisted seat 18 is bolted to magnet case 19 front ends by interior angle, high-strength magnet 14 is placed on magnet case 19 tops, fixing by magnetic pole protection apron 12, the middle magnetic pole beam 13 that uses is protected, magnetic pole protection apron 12 uses screw to be fixed on front twisted seat 18 and magnet case 19, finger probe twisted branch seat 15 is fixed on magnet case 19, finger probe 16 is bolted on finger probe twisted branch seat 15, finger probe 16 is equipped with probe Line concentrator 21 below, magnetic pole internal stop 17 is fixed on after finger probe 16, in the bottom of magnet case 19, be fixed with wiring casing 20, both sides live conductor sheet 22 and spring base hole 23, guide runner 24 after magnet case 19 afterbodys are fixing, each assembly forms whole centered by magnet case 19.
When the magnetization of floating detects piece 5 laminating metal pipe-wall, metal pipe-wall, the front magnetic pole N utmost point, magnet case 19 forms closed flux circuit with the rear magnetic pole S utmost point, the middle part of finger probe 16 in upper magnetic circuit, when metal pipe-wall has metal loss defects, magnetic line of force torsional deformation, the checkout value of the finger probe 16 in magnetic circuit middle part will change, by the contrast with zero defect checkout value, just can draw shape and the size of metal loss defects, the tungsten-carbide powder of the magnetic pole protection apron surface spraying magnetic conduction of magnetic pole wherein, do Wear-resistant Treatment, 0.15～0.25 millimeter of coating thickness, the non-magnetic stupalith of finger box surface spraying when finger probe 6, do Wear-resistant Treatment, 0.10～0.20 millimeter of coating thickness.
With reference to Fig. 3, described mileage wheel unit 10 is responsible for detector travel measurement and the record of mileage, and Magnetic Flux Leakage Inspecting aggregation of data, provides metal loss defects position.Mileage wheel unit 10 comprises hinge base 25, stretched spring 26, swing arm 27, rotating coder 28, mileage wheel 29.Swing arm 27 one end are connected with hinge base 25 by bearing pin, the other end is provided with mileage wheel 29, rotating coder 28 is positioned at mileage and takes turns 29 axis holes, stretched spring 26 is by swing arm 27 pull-ups, make mileage wheel 29 compress metal pipe-wall, with detection device, in pipeline, move, mileage wheel 29 rotates, rotating coder 28 records rotation angle and the number of turns, by calculating detection device, moves mileage number.
Described front floating hinge mechanism 3 is double-twisted structure, by rotational slide hinge arms and rotating rocker, formed, wherein double-twisted structure hinge arms lower end hinge moves forward and backward in the sliding-groove of fixing twisted seat, the matching gap of the sliding-groove of hinge and fixedly twisted seat is 0.50～1 millimeter, the fixedly twisted seat of front floating hinge mechanism 3 is fixed on the mounting point of detector body back shaft by location flat key and screw, the hinge arms of double-twisted structure is U-shaped structure, the sideshake of hinge arms and fixedly twisted seat is 0.50～1 millimeter, rocking bar one end of double-twisted structure is in fixedly twisted seat rotation, another and one end hinge arms of rocking bar is connected, the hinge axis hole at rocking bar two ends is Spielpassung with coordinating of hinge, gap is 0.10～0.20 millimeter, the sideshake of rocking bar and fixedly twisted seat is 0.50～1 millimeter.Such structural design is different from single hinge structure and is: when hinge arms swings up and down, shorten unsteady magnetization detection module unit and moved forward and backward distance, after making slide pad, guide runner length reduces, also reduced the thickness of the slip restraining groove on detection device back shaft simultaneously, join strength and the reliability of detection device have been guaranteed, also control and shortened before detection device, the mounting distance of rear power leather cup, thereby obtain detection device and cross the sealing that right angle bend is good, power loss when reducing detection device and crossing bend, guarantee the bend passing capacity of detection device.
The side installation side that the magnetization of floating detects piece 5 is to jack-up spring cupport structure, the every group of magnetization of floating detects piece 5 and coordinates front floating hinge mechanism 3 and rear guide chute structure, side is with the mutual jack-up of two groups of front and back jack-up spring 4, flexibly connect, realized the effect that fluctuates, specifically at magnet case side arrangement side direction jack-up spring base hole, jack-up spring 4 bottom surfaces, holddown spring seat hole, mounting spring directional post in spring base hole, spring directional post and spring base hole are to 4 two guiding of jack-up spring and position-limiting action, prevent that jack-up spring 4 from deviating from, mounting spring directional post in spring base hole.Spring directional post and spring inside diameter gap are 0.5～1 millimeter, and the gap of spring base hole and spring outer diameter is 1～2 millimeter.The advantage of design is the slide pad tube wall of can better fitting like this, adapts to the local deformation of pipeline, improves the passing capacity of detection device in pipeline.In addition, with the compressible jack-up spring in side 4, support and replaced rear hinge rigid support, also strengthened slide pad adaptive capacity under complicated applied force situation in pipeline, greatly improved structure of the detecting device intensity.
In sea-bottom oil-gas pipeline defect highi degree of accuracy, there be slip and the limit structure of rear end in the every group of front floating hinge of slide pad cooperation mechanism 3 of detection device, by the bar shaped slide block that is fixed on magnetization detection piece 5 rear ends of floating, formed with the guide chute and the limited ring that are arranged on rear power leather cup 9 front ends, the magnetization of floating detects piece 5 when activity, bar shaped slide block is upper and lower in guiding groove, slide in front and back, do not deviate from guiding groove, guiding groove top is coated with limited ring, the stroke up and down of restriction slide block, thereby constraint is floated, magnetization detects the domain of walker of piece 5, the slip sideshake of bar shaped slide block and rear guide chute is 1～2 millimeter, wherein bar shaped slide block is S304 stainless steel material, surface passivating treatment, rear guide chute is tin bronze or manganese bronze material.Such structure can make to obtain the pitching within the scope of several angle before and after slide pad, makes front and back magnetic pole on slide pad and the movable probe tube wall of fitting better, reaches better detection effect.
Stainless steel platen is installed in described front power leather cup 1 and rear power leather cup 9 outsides, by connecting bolt, front power leather cup 1 and rear power leather cup 9 are pressed on the leather cup attachment face of test device body back shaft 2, the front and back mounting distance of front power leather cup 1 and rear power leather cup 9 is 1～1.5 times of detection device application internal diameter of the pipeline.
The sealing of described cell bag unit 7 and the interior seal hatch of body back shaft 2 adopt end to axial two seals form, sealing medium is O type rubber seal, twice lanyard before and after cell bag unit 7 drum surfaces paste, lanyard material is teflon.
The sealing of described electronic recorder 8 and the interior seal hatch of body back shaft 2 adopt end to axial two seals form, sealing medium is O type rubber seal, twice lanyard before and after electronic recorder 8 drum surfaces paste, lanyard material is teflon.
Described rear power leather cup 9 attachment faces have cable passing hole, the cable of finger probe 6 synthetic cable and cable plug after probe Line concentrator 21 doublings of the magnetization detection piece 5 that floats are processed is inserted in by this cable-through hole on the cable socket of built-in inspection electronic recorder bared end, connects and measures and record circuit.By cable passing hole, through after cable, with quick-drying silicone rubber, block, guarantee that power leather cup front and back can pressure release.
Described cable plug and cable socket are withstand voltage rubber plug under water, socket, and quality of rubber materials is nitrile rubber, and pressure resistance is 0～20 MPa under water.
Working principle of the present invention is:
The magnetization of floating detects piece 5 laminating metal pipe-walls, metal pipe-wall now, the front magnetic pole N utmost point, magnet case 19 forms closed flux circuit with the rear magnetic pole S utmost point, the middle part of finger probe 6 in upper magnetic circuit, when metal pipe-wall has metal loss defects, magnetic line of force torsional deformation, the checkout value of the finger probe 6 in magnetic circuit middle part will change, by the contrast with zero defect checkout value, just can draw shape and the size of metal loss defects, the cable of finger probe 6 synthetic cable and cable plug after the magnetization detection piece 5 probe Line concentrator doublings of floating are processed is inserted on the cable socket of built-in inspection electronic recorder 8 bared ends by this cable-through hole, connect and measure and record circuit, this detection device relies on pipeline inner fluid to promote front power leather cup 1 and rear power leather cup 9 moves in pipeline, mileage wheel unit 10 moves in pipeline with detection device, mileage wheel 29 rotates driven rotary encoder 28 and rotates, thereby recording angular and the number of turns, move mileage number by can be calculated detection device, thus the defect of pipeline location of realizing location, detection device position and detecting.
Claims (10)
1. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy, comprise body back shaft (2), it is characterized in that: body back shaft (2) front end connects anti-raming and front power leather cup (1), front power leather cup (1) connects front floating hinge mechanism (3) below, front floating hinge mechanism (3) detects piece (5) with two groups of magnetization of floating and is connected, the every group of magnetization of floating detects front and back, piece (5) side installation side to jack-up spring (4), by jack-up spring (4) magnetization of floating, detect piece (5) and open, form relocatable magnetization cycle and Magnetic Flux Leakage Inspecting module unit; The magnetization of floating detects piece (5) finger probe (6) is installed above, the rear portion that the magnetization of floating detects piece (5) is slip form, guiding groove and limited ring are installed in rear end at body back shaft (2), and constraint is floated and magnetized sideshake and the amount of moving up and down that detects piece (5); Power leather cup (9) after install at the rear portion of guiding groove, front and back power leather cup has formed power-driven system jointly; In body back shaft (2), before and after seal hatch, to inserting, cell bag unit (7) and electronic recorder (8) are installed respectively, the electrode pair of cell bag unit (7) and electronic recorder (8) is inserted to electronic recorder (8) and is powered on; At body back shaft (2) afterbody, detector mileage wheel unit (10) has been installed.
2. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy according to claim 1, it is characterized in that: described unsteady magnetization detects piece (5) and comprises magnet case (19), front twisted branch axle (11) is placed in magnet case (19) front end axis hole, front twisted seat (18) is fixed on magnet case (19) front end, high-strength magnet (14) is placed on magnet case (19) top, fixing by magnetic pole protection apron (12), middle use magnetic pole beam (13) protection, magnetic pole protection apron (12) is fixed on front twisted seat (18) and magnet case (19), finger probe twisted branch seat (15) is fixed on magnet case (19), finger probe (16) is fixed on finger probe twisted branch seat (15), finger probe (16) is equipped with probe Line concentrator (21) below, magnetic pole internal stop (17) is fixed on after finger probe (16), in the bottom of magnet case (19), be fixed with wiring casing (20), both sides live conductor sheets (22) and spring base hole (23), guide runner (24) after magnet case (19) afterbody is fixing, each assembly forms whole centered by magnet case (19).
3. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy according to claim 1, it is characterized in that: described mileage wheel unit (10) comprises swing arm (27), swing arm 27 one end are connected with hinge base (25) by bearing pin, the other end is provided with mileage wheel (29), rotating coder (28) is positioned at mileage wheel (29) axis hole, stretched spring (26) one end connects swing arm (27), the other end connects hinge base (25), stretched spring (26) is by swing arm (27) pull-up, make mileage wheel (29) compress metal pipe-wall, with detection device, in pipeline, move.
4. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy according to claim 1, it is characterized in that: described front floating hinge mechanism (3) is double-twisted structure, by rotational slide hinge arms and rotating rocker, formed, wherein double-twisted structure hinge arms lower end hinge moves forward and backward in the sliding-groove of fixing twisted seat, the matching gap of the sliding-groove of hinge and fixedly twisted seat is 0.50～1 millimeter, the fixedly twisted seat of front floating hinge mechanism (3) is fixed on the mounting point of body back shaft (2), the hinge arms of double-twisted structure is U-shaped structure, the sideshake of hinge arms and fixedly twisted seat is 0.50～1 millimeter, fixedly is rotating in twisted seat rocking bar one end of double-twisted structure, the other end hinge arms is connected, the hinge axis hole at rocking bar two ends is Spielpassung with coordinating of hinge, gap is 0.10～0.20 millimeter, the sideshake of rocking bar and fixedly twisted seat is 0.50～1 millimeter.
5. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy according to claim 1, it is characterized in that: the side installation side that described unsteady magnetization detects piece (5) is to jack-up spring cupport structure, the every group of magnetization of floating detects piece (5) and coordinates front floating hinge mechanism (3) and rear guide chute structure, side is with the mutual jack-up of the two groups of jack-up springs in front and back (4), specifically at magnet case side arrangement side direction jack-up spring base hole, bottom surface, jack-up spring (4) holddown spring seat hole, mounting spring directional post in spring base hole, spring directional post and spring base hole play two guiding and position-limiting action to jack-up spring (4), prevent that jack-up spring (4) from deviating from, mounting spring directional post in spring base hole, spring directional post and spring inside diameter gap are 0.5～1 millimeter, the gap of spring base hole and spring outer diameter is 1～2 millimeter.
6. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy according to claim 1, it is characterized in that: stainless steel platen is installed in described front power leather cup (1) and rear power leather cup (9) outside, front power leather cup (1) and rear power leather cup (9) are pressed on the leather cup attachment face of body back shaft (2), and the front and back mounting distance of front power leather cup (1) and rear power leather cup (9) is 1～1.5 times of application internal diameter of the pipeline.
7. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy according to claim 1, it is characterized in that: the sealing of described cell bag unit (7) and the interior seal hatch of body back shaft (2) adopt end to axial two seals form, sealing medium is O type rubber seal, twice lanyard before and after cell bag unit (7) drum surface pastes, lanyard material is teflon.
8. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy according to claim 1, it is characterized in that: the sealing of the interior seal hatch of described electronic recorder (8) and body back shaft (2) adopt end to axial two seals form, sealing medium is O type rubber seal, twice lanyard before and after electronic recorder (8) drum surface pastes, lanyard material is teflon.
9. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy according to claim 1, it is characterized in that: described rear power leather cup (9) attachment face has cable passing hole, the cable of finger probe (6) synthetic cable and cable plug after magnetization detection piece (5) the probe Line concentrator doubling of floating is processed is inserted in by this cable-through hole on the cable socket of built-in inspection electronic recorder bared end, connects and measures and record circuit.
10. detection device in sea-bottom oil-gas pipeline defect highi degree of accuracy according to claim 9, is characterized in that: described cable plug and cable socket are withstand voltage rubber plug under water, socket, and quality of rubber materials is nitrile rubber, and pressure resistance is 0～20 MPa under water.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598517.0A CN103604022B (en) | 2013-11-23 | 2013-11-23 | High-precision inner detecting device for seabed oil and gas pipeline flaws |
| GB1516894.1A GB2527696B (en) | 2013-11-23 | 2014-09-16 | An inner detecting device for subsea oil and gas pipeline |
| PCT/CN2014/086655 WO2015074456A1 (en) | 2013-11-23 | 2014-09-16 | An inner detecting device for subsea oil and gas pipeline |
| CA2888756A CA2888756C (en) | 2013-11-23 | 2014-09-16 | An inner detecting device for subsea oil and gas pipeline |
| JP2015548190A JP6154911B2 (en) | 2013-11-23 | 2014-09-16 | Internal detector for subsea oil and gas pipelines |
| US14/759,300 US10030804B2 (en) | 2013-11-23 | 2014-09-16 | Inner detecting device for subsea oil and gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598517.0A CN103604022B (en) | 2013-11-23 | 2013-11-23 | High-precision inner detecting device for seabed oil and gas pipeline flaws |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103604022A true CN103604022A (en) | 2014-02-26 |
| CN103604022B CN103604022B (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310598517.0A Active CN103604022B (en) | 2013-11-23 | 2013-11-23 | High-precision inner detecting device for seabed oil and gas pipeline flaws |
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| CN111902669A (en) * | 2017-12-29 | 2020-11-06 | 韩国天然气公社 | Magnetic flux leakage PIG |
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| CN108253197A (en) * | 2018-02-01 | 2018-07-06 | 青岛理工大学 | Air pipe type hydraulic connection submarine pipeline operation device and method |
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| CN108612959A (en) * | 2018-04-27 | 2018-10-02 | 浙江浙能天然气运行有限公司 | A kind of support of natural gas tube pipeline robot and mileage measuring device |
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| CN108426520A (en) * | 2018-05-15 | 2018-08-21 | 天津大学 | The detection device in pipeline stolen hole and the detection method at stolen hole center, diameter |
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