CN204705528U - A kind of coupon growing the checking of defeated buried pipeline checkout equipment power of test - Google Patents
A kind of coupon growing the checking of defeated buried pipeline checkout equipment power of test Download PDFInfo
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- CN204705528U CN204705528U CN201520367652.9U CN201520367652U CN204705528U CN 204705528 U CN204705528 U CN 204705528U CN 201520367652 U CN201520367652 U CN 201520367652U CN 204705528 U CN204705528 U CN 204705528U
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Abstract
The utility model discloses a kind of coupon growing the checking of defeated buried pipeline checkout equipment power of test, pipeline comprises metal tube and anticorrosive coat, metal tube surface coating anticorrosive coat, pipeline is distributed with number of drawbacks lines, each defect lines comprises that anticorrosive coat is thinning, anticorrosive coat is damaged, anticorrosive coating peeling, mechanical damage, weld defects, leak holes and robber connect arm; Pipe diameter is 500 ~ 1016mm, duct length >=50m.By this coupon, repeatedly can verify the power of test of multiple checkout equipment, improve the accuracy of checkout equipment, thus provide higher guarantee for the safe handling of pipeline.
Description
Technical field
The utility model relates to long defeated buried pipeline detection technique field, particularly a kind of coupon growing the checking of defeated buried pipeline checkout equipment power of test.
Background technology
At present, buried pipeline detection technique is mainly around in this three large problem of metal body defect, anti-corrosion insulation layer defects and conduit running environment.The detection of corresponding metal body defect, the checkout equipment that mainly contains developed at present has Inner Examination Technology on Pipeline (being commonly called as pipeline pig), ultrasonic guided wave detection technology and stress concentration magnetic scanning technique; The detection of corresponding anti-corrosion insulation layer defects, the main flow detection method developed at present has current method and audio detection method etc. in DC potential gradient method, pipe; And about the detection technique of conduit running environment, mainly contain Cathode protect testing, stray current detection, soil corrosivity detection etc.
Some the technical papers achievements delivered disclosed in the detection case over more than 20 years of China in long defeated buried pipeline, and the inspection case of our this personal experience in several years, each detection technique has its superiority, also has its limitation.Such as: Inner Examination Technology on Pipeline can check in all directions to pipe interior place of arrival, defects such as comprising abnormal deformation, corrosion thinning, crackle can be checked out, but the probe system entrained by it is based on leakage flux principle or ultrasonic wave principle, require condition of work very harsh (as coupling effect, pressure medium, medium temperature etc.), detecting device is in operation and is inevitably subject to the impact such as operating rate, impurity, causes undetected situation; Meanwhile, it can not judge the quality of anticorrosive coat.And for example: anticorrosive coat detection technique, abroad or domestic all comparative maturities, detectability for anticorrosive coat quality is all very strong, but there is again its respective feature between distinct methods, distinct device, some stresses the overall evaluation, some stresses to look for leak source, and this method can not detector tube weight.
Therefore, how could we more effectively use these technical equipment existing to detect long defeated buried pipeline, improve and detect recall rate? up to the present, go back the standard sample of the defeated buried pipeline of the similar length of neither one in this area, contrast verification is carried out to these used equipment.Buried pipeline is laid in underground after all, belong to and cannot see impalpable press device, detect data out after, sometimes accidentally excavate one or two place to carry out verifying, also the authority of the validity of these checkout equipments of contrast of neither one comparison system proves or correlation data disclosed in some both at home and abroad at present.Therefore, even if to detect in carrying out or the piping system of stress concentration magnetic Scanning Detction still exists very high destruction risk, if in January, 2013 China Petrochemical Industry luxuriant-profound line oil pipeline oil accident is exactly just occur after a test.Although from testing result, have also discovered the defect of a lot of metal body and anti-corrosion insulating layer aspect, and excavated some positions and verify, but usually there is the phenomenon that can't detect position.
As can be seen here, how conduit running built-in problem can could be carried out complementary detection by various existing checkout equipment, search out optimum checkout equipment combination, reach the effect of " as long as defectiveness just can detect; do not have defect just not show ", reduce conduit running risk to greatest extent, become the new problem of long defeated buried pipeline detection technique.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of coupon growing the checking of defeated buried pipeline checkout equipment power of test is provided, by this coupon, repeatedly can verify the power of test of multiple checkout equipment, improve the accuracy of checkout equipment, thus provide higher guarantee for the safe handling of pipeline.
The technical solution of the utility model is: a kind of coupon growing the checking of defeated buried pipeline checkout equipment power of test, pipeline comprises metal tube and anticorrosive coat, metal tube surface coating anticorrosive coat, pipeline is distributed with number of drawbacks lines, each defect lines comprises that anticorrosive coat is thinning, anticorrosive coat is damaged, anticorrosive coating peeling, mechanical damage, weld defects, leak holes and robber connect arm; Pipe diameter is 500 ~ 1016mm, duct length >=50m.
Described pipeline forms primarily of elbow, pipe nipple and straight tube welding, according to the throughput direction of rock gas, be respectively the first elbow, the first straight tube, the second straight tube, the 3rd straight tube, the 4th straight tube, the 5th straight tube, the first pipe nipple, the second elbow, the second pipe nipple, the 6th straight tube and triple section arm, pipe ends is provided with removable cover, and the depth of burying of pipeline is 1.2m.
The junction of the 3rd straight tube and the 4th straight tube is provided with the first probe ring, and the second pipe nipple is provided with the second probe ring, the circuit of the external cathodic protection mode of pipeline.
The thinning distribution situation on pipeline of described anticorrosive coat is as follows:
With the Article 1 circumferential welded seam of low temperature chamber (i.e. the locker room of rock gas) one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 3 o'clock direction at distance starting point 9m place, arranging the length of side is that the square anticorrosive coat of 15mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal,
The 4 o'clock direction at distance starting point 17.5m place, arranging the length of side is that the square anticorrosive coat of 20mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal,
The 8 o'clock direction at distance starting point 25m place, arranging diameter is that the circular anticorrosive coat of 50mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal,
The 9 o'clock direction at distance starting point 28m place, arranging the length of side is that the square anticorrosive coat of 100mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal,
The 12 o'clock direction at distance starting point 72m place, arranging the length of side is that the square anticorrosive coat of 100mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal.
The damaged distribution situation on pipeline of described anticorrosive coat is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 3 o'clock direction at distance starting point 6m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0,
The 4 o'clock direction at distance starting point 12.5m place, arranging length is 8mm, and width is that the rectangle anticorrosive coat of 5mm is damaged, and expose metal, loss rate of metal is 0,
Distance starting point is the 6 o'clock direction of 23.5m, and arrange the circular anticorrosive coat breakage that diameter is 10mm, expose metal, loss rate of metal is 0,
The 8 o'clock direction at distance starting point 35m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0,
The 3 o'clock direction at distance starting point 39.1m place, arranging length is 15mm, and width is that the rectangle anticorrosive coat of 10mm is damaged, and expose metal, loss rate of metal is 0,
The 4 o'clock direction at distance starting point 46m place, arranging length is 8mm, and width is that the rectangle anticorrosive coat of 7mm is damaged, and expose metal, loss rate of metal is 0,
The 8 o'clock direction at distance starting point 55m place, arrange the circular anticorrosive coat breakage that diameter is 10mm, expose metal, loss rate of metal is 0,
The 8 o'clock direction at distance starting point 65m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0,
The 3 o'clock direction at distance starting point 69.5m place, arranging length is 50mm, and width is that the rectangle anticorrosive coat of 30mm is damaged, and expose metal, loss rate of metal is 0,
The 12 o'clock direction at distance starting point 75m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0.
The distribution situation of described anticorrosive coating peeling on pipeline is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 3 o'clock direction at distance starting point 39m place, arranging length is 15mm, and width is the rectangle anticorrosive coating peeling of 10mm, does not expose metal,
The 5 o'clock direction at distance starting point 43m place, arranges the square anticorrosive coating peeling that the length of side is 15mm, does not expose metal,
The 12 o'clock direction at distance starting point 50m place, arranges the circular anticorrosive coating peeling that diameter is 50mm, does not expose metal,
The 9 o'clock direction at distance starting point 60m place, arranges the square anticorrosive coating peeling that the length of side is 200mm, does not expose metal,
The 12 o'clock direction at distance starting point 70m place, arranges the square anticorrosive coating peeling that the length of side is 200mm, does not expose metal.
Anticorrosive coat is thinning, anticorrosive coat is damaged and the defect lines of anticorrosive coating peeling is arranged, and is mainly used for the power of test verifying anticorrosive coat checkout equipment.
The mode of described mechanical damage comprises pit, cutting, outside surface erosion grooves and inside corrosion groove, and the distribution situation of mechanical damage on pipeline is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 12 o'clock direction at distance starting point 61.3m place, arrange pit, pit depth is 60mm,
The 12 o'clock direction at distance starting point 68.4m place, arrange pit, pit depth is 60mm,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 60.025m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 60.425m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 60.625m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 69.320m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 69.520m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 69.920m place, arranges the cutting of half-turn,
The 2 o'clock direction at distance starting point 11.922m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 3 o'clock direction at distance starting point 11.922m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 1 o'clock direction at distance starting point 35.900m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 2 o'clock direction at distance starting point 35.900m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 4 o'clock direction at distance starting point 35.910m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 6 o'clock direction at distance starting point 0.37m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in horizontally set,
The 6 o'clock direction at distance starting point 0.67m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in horizontally set,
The 6 o'clock direction at distance starting point 0.78 ~ 0.98m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in longitudinally arranging,
The 6 o'clock direction at distance starting point 1.22 ~ 1.42m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in longitudinally arranging.
Wherein, the defect lines of cutting, outside surface erosion grooves and inside corrosion groove is arranged, and can be used for the power of test verifying supersonic guide-wave equipment; The defect lines of pit is arranged, and can be used for the power of test verifying in-pipeline detector or stress concentration magnetic scanning device.
The mode of described weld defects comprises crackle, lack of penetration lines, incomplete fusion lines, strip hole and indent lines, and the distribution situation of weld defects on pipeline is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
3 ~ 4 o'clock direction at distance starting point 35.795m place, arrange crackle, crack length is 155mm,
10 ~ 11 o'clock direction at distance starting point 35.795m place, arrange crackle, crack length is 140mm,
In 4 ~ 5 o'clock direction at starting point place, the lack of penetration lines that length is 40mm is set,
Starting point place 4 ~ 5 o'clock direction root, the incomplete fusion lines that length is 40mm is set,
In 10 ~ 11 o'clock direction at starting point place, the strip hole that length is 180mm is set,
3 ~ 4 o'clock direction at distance starting point 12.02m place, arranges the incomplete fusion lines that length is 120mm,
Distance starting point 59.8m place 9 o'clock direction root, arrange indent lines, the length of indent lines is 230mm, and the degree of depth is 2mm.
Described leak holes is through hole, and the distribution situation of leak holes on pipeline is as follows: with the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 12 o'clock direction at distance starting point 60.24m place, arrange the through hole that diameter is 10mm, through hole penetrates the inner and outer wall of pipeline, and through hole scribbles anticorrosive coat, and through hole does not produce leakage phenomenon,
The 12 o'clock direction at distance starting point 69.76m place, arrange the through hole that diameter is 10mm, through hole penetrates the inner and outer wall of pipeline, and through hole scribbles anticorrosive coat, and through hole does not produce leakage phenomenon.
The setting of leak holes, can be used for the power of test of proof stress concentration magnetic scanning device.
It is that user steals the arm connect at pipe side wall that described robber connects arm, robber connects the distribution situation of arm on pipeline and is: with the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface, the 9 o'clock direction place of distance starting point 38.7m, vertically arm is set, arm diameter is the arm of 168mm, propping up tube thickness is 7.3mm, arm comprises the level be connected and lays section and draw section, level is laid section and is parallel to ground, level lays segment length 1m, the end of drawing section draws ground, and the end of drawing section is provided with blind plate, the length of drawing section is 1.5m.
Steal the setting connecing arm, can be used for the power of test of proof stress concentration magnetic scanning device.
This coupon is mainly used in verifying in-pipeline detector, stress concentration magnetic scanning device, supersonic guide-wave equipment and anticorrosive coat checkout equipment power of test, when this coupon uses, first by each defect lines record on coupon, and make each parameter form database, then according to general buried pipeline, the degree of depth is set, coupon is buried in underground, equipment to be verified is tested coupon by its corresponding method of testing, after obtaining test result, the coupon parameter prestored in test result and database is analyzed, thus judge that whether the power of test of equipment to be verified is up to standard.
The utility model, relative to prior art, has following beneficial effect:
This coupon investigates and study rear design further to the problem existing for domestic natural gas pipe network structure, according to the various defective forms that current long defeated buried pipeline produces in actual condition, to draw up out corresponding defect lines at coupon patrix, test is utilized to compare to the equipment intending being used for actual pipeline inspection, find out the equipment combination reaching maximum inspection recall rate, thus improving the accuracy of existing checkout equipment, the safe handling for pipeline provides higher guarantee.
Under the prerequisite that checkout equipment is up to standard, by checkout equipment, the detection of coupon is operated, also can be used for the detection level of test operation personnel, ensure pipe safety better.
Defect lines on this coupon, gather the sensitive defect that checkout equipment that the actual defects that finds in the secure administration procedure both at home and abroad in decades about long defeated buried pipeline and domestic and international research institution develop is corresponding, realisticly disclose issuable defect of pipeline situation completely.
In the use procedure of this coupon, parameter corresponding for each defect lines can be created as database, make practicable buried long distance pipeline inspection job instruction, be conducive to industry and instruct, also there is directive significance to the research and development of new checkout equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of this coupon.
Fig. 2 is the structural representation of set pit on this coupon.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
The present embodiment is structure for Guangdong Province's gas distributing system and board design.
A kind of coupon growing the checking of defeated buried pipeline checkout equipment power of test, pipeline comprises metal tube and anticorrosive coat, metal tube surface coating anticorrosive coat, pipeline is distributed with number of drawbacks lines, each defect lines comprises that anticorrosive coat is thinning, anticorrosive coat is damaged, anticorrosive coating peeling, mechanical damage, weld defects, leak holes and robber connect arm; Pipe diameter is 914mm, duct length >=50m.
As shown in Figure 1, pipeline forms primarily of elbow, pipe nipple and straight tube welding, according to the throughput direction of rock gas, be respectively the first elbow 1, first straight tube 2, second straight tube 3, the 3rd straight tube 4, the 4th straight tube 5, the 5th straight tube 6, first pipe nipple 7, second elbow 8, second pipe nipple 9, the 6th straight tube 10 and triple section arm 11, pipe ends is provided with removable cover, and the depth of burying of pipeline is 1.2m.Wherein, the length of pipe nipple is respectively about 1m.
The junction of the 3rd straight tube and the 4th straight tube is provided with the first probe ring 12, second pipe nipple and is provided with the second probe ring 13, the circuit of the external cathodic protection mode of pipeline.
The thinning distribution situation on pipeline of anticorrosive coat is as follows: with the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface, the 3 o'clock direction at distance starting point 9m place, arranging the length of side is that the square anticorrosive coat of 15mm is thinning, anticorrosive coat Reducing thickness is 50%, does not expose metal; The 4 o'clock direction at distance starting point 17.5m place, arranging the length of side is that the square anticorrosive coat of 20mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal; The 8 o'clock direction at distance starting point 25m place, arranging diameter is that the circular anticorrosive coat of 50mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal; The 9 o'clock direction at distance starting point 28m place, arranging the length of side is that the square anticorrosive coat of 100mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal; The 12 o'clock direction at distance starting point 72m place, arranging the length of side is that the square anticorrosive coat of 100mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal.
The damaged distribution situation on pipeline of anticorrosive coat is as follows: with the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface, the 3 o'clock direction at distance starting point 6m place, the circular anticorrosive coat breakage that diameter is 20mm is set, expose metal, loss rate of metal is 0; The 4 o'clock direction at distance starting point 12.5m place, arranging length is 8mm, and width is that the rectangle anticorrosive coat of 5mm is damaged, and expose metal, loss rate of metal is 0; Distance starting point is the 6 o'clock direction of 23.5m, and arrange the circular anticorrosive coat breakage that diameter is 10mm, expose metal, loss rate of metal is 0; The 8 o'clock direction at distance starting point 35m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0; The 3 o'clock direction at distance starting point 39.1m place, arranging length is 15mm, and width is that the rectangle anticorrosive coat of 10mm is damaged, and expose metal, loss rate of metal is 0; The 4 o'clock direction at distance starting point 46m place, arranging length is 8mm, and width is that the rectangle anticorrosive coat of 7mm is damaged, and expose metal, loss rate of metal is 0; The 8 o'clock direction at distance starting point 55m place, arrange the circular anticorrosive coat breakage that diameter is 10mm, expose metal, loss rate of metal is 0; The 8 o'clock direction at distance starting point 65m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0; The 3 o'clock direction at distance starting point 69.5m place, arranging length is 50mm, and width is that the rectangle anticorrosive coat of 30mm is damaged, and expose metal, loss rate of metal is 0; The 12 o'clock direction at distance starting point 75m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0.
The distribution situation of anticorrosive coating peeling on pipeline is as follows: with the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface, the 3 o'clock direction at distance starting point 39m place, arranging length is 15mm, width is the rectangle anticorrosive coating peeling of 10mm, does not expose metal; The 5 o'clock direction at distance starting point 43m place, arranges the square anticorrosive coating peeling that the length of side is 15mm, does not expose metal; The 12 o'clock direction at distance starting point 50m place, arranges the circular anticorrosive coating peeling that diameter is 50mm, does not expose metal; The 9 o'clock direction at distance starting point 60m place, arranges the square anticorrosive coating peeling that the length of side is 200mm, does not expose metal; The 12 o'clock direction at distance starting point 70m place, arranges the square anticorrosive coating peeling that the length of side is 200mm, does not expose metal.
Anticorrosive coat is thinning, anticorrosive coat is damaged and the defect lines of anticorrosive coating peeling is arranged, and is mainly used for the power of test verifying anticorrosive coat checkout equipment.
The mode of mechanical damage comprises pit (structure of pit 14 as shown in Figure 2), cutting, outside surface erosion grooves and inside corrosion groove, the distribution situation of mechanical damage on pipeline is as follows: with the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface, the 12 o'clock direction at distance starting point 61.3m place, arrange pit, pit depth is 60mm; The 12 o'clock direction at distance starting point 68.4m place, arrange pit, pit depth is 60mm; The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 60.025m place, arranges the cutting of half-turn; The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 60.425m place, arranges the cutting of half-turn; The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 60.625m place, arranges the cutting of half-turn; The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 69.320m place, arranges the cutting of half-turn; The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 69.520m place, arranges the cutting of half-turn; The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 69.920m place, arranges the cutting of half-turn; The 2 o'clock direction at distance starting point 11.922m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm; The 3 o'clock direction at distance starting point 11.922m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm; The 1 o'clock direction at distance starting point 35.900m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm; The 2 o'clock direction at distance starting point 35.900m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm; The 4 o'clock direction at distance starting point 35.910m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm; The 6 o'clock direction at distance starting point 0.37m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in horizontally set; The 6 o'clock direction at distance starting point 0.67m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in horizontally set; The 6 o'clock direction at distance starting point 0.78 ~ 0.98m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in longitudinally arranging; The 6 o'clock direction at distance starting point 1.22 ~ 1.42m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in longitudinally arranging.
Wherein, the defect lines of cutting, outside surface erosion grooves and inside corrosion groove is arranged, and can be used for the power of test verifying supersonic guide-wave equipment; The defect lines of pit is arranged, and can be used for the power of test verifying in-pipeline detector or stress concentration magnetic scanning device.
The mode of weld defects comprises crackle, lack of penetration lines, incomplete fusion lines, strip hole and indent lines, the distribution situation of weld defects on pipeline is as follows: with the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface; 3 ~ 4 o'clock direction at distance starting point 35.795m place, arrange crackle, crack length is 155mm; 10 ~ 11 o'clock direction at distance starting point 35.795m place, arrange crackle, crack length is 140mm; In 4 ~ 5 o'clock direction at starting point place, the lack of penetration lines that length is 40mm is set; Starting point place 4 ~ 5 o'clock direction root, the incomplete fusion lines that length is 40mm is set; In 10 ~ 11 o'clock direction at starting point place, the strip hole that length is 180mm is set; 3 ~ 4 o'clock direction at distance starting point 12.02m place, arranges the incomplete fusion lines that length is 120mm; Distance starting point 59.8m place 9 o'clock direction root, arrange indent lines, the length of indent lines is 230mm, and the degree of depth is 2mm.
Leak holes is through hole, the distribution situation of leak holes on pipeline is as follows: with the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface, the 12 o'clock direction at distance starting point 60.24m place, arrange the through hole that diameter is 10mm, through hole penetrates the inner and outer wall of pipeline, through hole scribbles anticorrosive coat, and through hole does not produce leakage phenomenon; The 12 o'clock direction at distance starting point 69.76m place, arrange the through hole that diameter is 10mm, through hole penetrates the inner and outer wall of pipeline, and through hole scribbles anticorrosive coat, and through hole does not produce leakage phenomenon.
The setting of leak holes, can be used for the power of test of proof stress concentration magnetic scanning device.
Stealing and connecing arm is that user steals the arm connect at pipe side wall, robber connects the distribution situation of arm on pipeline and is: with the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface, the 9 o'clock direction place of distance starting point 38.7m, vertically arm is set, arm diameter is the arm of 168mm, propping up tube thickness is 7.3mm, arm comprises the level be connected and lays section and draw section, level is laid section and is parallel to ground, level lays segment length 1m, the end of drawing section draws ground, and the end of drawing section is provided with blind plate, the length of drawing section is 1.5m.
Steal the setting connecing arm, can be used for the power of test of proof stress concentration magnetic scanning device.
This coupon is mainly used in verifying in-pipeline detector, stress concentration magnetic scanning device, supersonic guide-wave equipment and anticorrosive coat checkout equipment power of test, when this coupon uses, first by each defect lines record on coupon, and make each parameter form database, then according to general buried pipeline, the degree of depth is set, coupon is buried in underground, equipment to be verified is tested coupon by its corresponding method of testing, after obtaining test result, the coupon parameter prestored in test result and database is analyzed, thus judge that whether the power of test of equipment to be verified is up to standard.
Wherein, in-pipeline detector is the intelligent pig by being equipped with non-destructive detecting device and data sampling and processing and storage system, runs in pipeline, completes the scanning step by step to body, reaches the testing goal to defect size, position.Supersonic guide-wave equipment is in pipe circumference, apply low frequency distorted wave or compressional wave, guided wave is propagated along pipeline axial, when running into pipeline wall thickness change, the reflection of some energy is transferred back to device sensor, its complementary energy continues to propagate, until loss is complete, so just can to the detection of the longer distance of pipeline.Stress concentration magnetic scanning device is that Russian Mr. Du Bofu in 1997 proposes, by ferromagnet under operating load and magnetic field of the earth load, static stress and distortion concentration zones can have the magnetic domain tissue orientation of magnetoelastic properties and irreversible reorientation, form magnetic domain stationary nodes, this irreversible change remains after operating load is eliminated, this area of stress concentration forms stray field, got the information of metal surface stray field by Dissatisfied, the size, position etc. of counter stress concentration zones and defect judge.Anticorrosive coat checkout equipment is by sending an exchange of information source to underground pipeline, when underground, pipeline anticorrosion coating is corroded, current return will be formed at leak source, by the leak source signal radiation earthward produced, and radiation signal is maximum directly over leak source, find according to this principle and Lou lose point, the position of the trend of underground metal pipes, the degree of depth and the hot spot of insulating corrosion layer, leakage point can be found when not excavating, generally can detect the metallic conduit in the 5m of underground, transmitting range 50m ~ 5km.
As mentioned above, just can realize the utility model preferably, above-described embodiment is only preferred embodiment of the present utility model, is not used for limiting practical range of the present utility model; Namely all equalizations done according to the utility model content change and modify, all by the utility model claim scope required for protection is contained.
Claims (10)
1. the coupon of one kind long defeated buried pipeline checkout equipment power of test checking, it is characterized in that, pipeline comprises metal tube and anticorrosive coat, metal tube surface coating anticorrosive coat, pipeline is distributed with number of drawbacks lines, each defect lines comprises that anticorrosive coat is thinning, anticorrosive coat is damaged, anticorrosive coating peeling, mechanical damage, weld defects, leak holes and robber connect arm; Pipe diameter is 500 ~ 1016mm, duct length >=50m.
2. according to claim 1 a kind of grow defeated buried pipeline checkout equipment power of test checking coupon, it is characterized in that, described pipeline forms primarily of elbow, pipe nipple and straight tube welding, according to the throughput direction of rock gas, be respectively the first elbow, the first straight tube, the second straight tube, the 3rd straight tube, the 4th straight tube, the 5th straight tube, the first pipe nipple, the second elbow, the second pipe nipple, the 6th straight tube and triple section arm, pipe ends is provided with removable cover, and the depth of burying of pipeline is 1.2m.
3. according to claim 2 a kind of grow defeated buried pipeline checkout equipment power of test checking coupon; it is characterized in that; the junction of described 3rd straight tube and the 4th straight tube is provided with the first probe ring, and the second pipe nipple is provided with the second probe ring, the circuit of the external cathodic protection mode of pipeline.
4. according to claim 1 a kind of grow defeated buried pipeline checkout equipment power of test checking coupon, it is characterized in that, the thinning distribution situation on pipeline of described anticorrosive coat is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 3 o'clock direction at distance starting point 9m place, arranging the length of side is that the square anticorrosive coat of 15mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal,
The 4 o'clock direction at distance starting point 17.5m place, arranging the length of side is that the square anticorrosive coat of 20mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal,
The 8 o'clock direction at distance starting point 25m place, arranging diameter is that the circular anticorrosive coat of 50mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal,
The 9 o'clock direction at distance starting point 28m place, arranging the length of side is that the square anticorrosive coat of 100mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal,
The 12 o'clock direction at distance starting point 72m place, arranging the length of side is that the square anticorrosive coat of 100mm is thinning, and anticorrosive coat Reducing thickness is 50%, does not expose metal.
5. a kind of coupon growing the checking of defeated buried pipeline checkout equipment power of test according to claim 1, it is characterized in that, the damaged distribution situation on pipeline of described anticorrosive coat is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 3 o'clock direction at distance starting point 6m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0,
The 4 o'clock direction at distance starting point 12.5m place, arranging length is 8mm, and width is that the rectangle anticorrosive coat of 5mm is damaged, and expose metal, loss rate of metal is 0,
Distance starting point is the 6 o'clock direction of 23.5m, and arrange the circular anticorrosive coat breakage that diameter is 10mm, expose metal, loss rate of metal is 0,
The 8 o'clock direction at distance starting point 35m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0,
The 3 o'clock direction at distance starting point 39.1m place, arranging length is 15mm, and width is that the rectangle anticorrosive coat of 10mm is damaged, and expose metal, loss rate of metal is 0,
The 4 o'clock direction at distance starting point 46m place, arranging length is 8mm, and width is that the rectangle anticorrosive coat of 7mm is damaged, and expose metal, loss rate of metal is 0,
The 8 o'clock direction at distance starting point 55m place, arrange the circular anticorrosive coat breakage that diameter is 10mm, expose metal, loss rate of metal is 0,
The 8 o'clock direction at distance starting point 65m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0,
The 3 o'clock direction at distance starting point 69.5m place, arranging length is 50mm, and width is that the rectangle anticorrosive coat of 30mm is damaged, and expose metal, loss rate of metal is 0,
The 12 o'clock direction at distance starting point 75m place, arrange the circular anticorrosive coat breakage that diameter is 20mm, expose metal, loss rate of metal is 0.
6. according to claim 1 a kind of grow defeated buried pipeline checkout equipment power of test checking coupon, it is characterized in that, the distribution situation of described anticorrosive coating peeling on pipeline is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 3 o'clock direction at distance starting point 39m place, arranging length is 15mm, and width is the rectangle anticorrosive coating peeling of 10mm, does not expose metal,
The 5 o'clock direction at distance starting point 43m place, arranges the square anticorrosive coating peeling that the length of side is 15mm, does not expose metal,
The 12 o'clock direction at distance starting point 50m place, arranges the circular anticorrosive coating peeling that diameter is 50mm, does not expose metal,
The 9 o'clock direction at distance starting point 60m place, arranges the square anticorrosive coating peeling that the length of side is 200mm, does not expose metal,
The 12 o'clock direction at distance starting point 70m place, arranges the square anticorrosive coating peeling that the length of side is 200mm, does not expose metal.
7. according to claim 1 a kind of grow defeated buried pipeline checkout equipment power of test checking coupon, it is characterized in that, the mode of described mechanical damage comprises pit, cutting, outside surface erosion grooves and inside corrosion groove, and the distribution situation of mechanical damage on pipeline is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 12 o'clock direction at distance starting point 61.3m place, arrange pit, pit depth is 60mm,
The 12 o'clock direction at distance starting point 68.4m place, arrange pit, pit depth is 60mm,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 60.025m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 60.425m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 60.625m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 69.320m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 69.520m place, arranges the cutting of half-turn,
The inner-walls of duct in distance o'clock at 3 o'clock to 9 direction, starting point 69.920m place, arranges the cutting of half-turn,
The 2 o'clock direction at distance starting point 11.922m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 3 o'clock direction at distance starting point 11.922m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 1 o'clock direction at distance starting point 35.900m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 2 o'clock direction at distance starting point 35.900m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 4 o'clock direction at distance starting point 35.910m place, arrange outside surface erosion grooves, the length of outside surface erosion grooves is 70mm, and the degree of depth is 5 ~ 6mm,
The 6 o'clock direction at distance starting point 0.37m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in horizontally set,
The 6 o'clock direction at distance starting point 0.67m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in horizontally set,
The 6 o'clock direction at distance starting point 0.78 ~ 0.98m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in longitudinally arranging,
The 6 o'clock direction at distance starting point 1.22 ~ 1.42m place, arrange inside corrosion groove, the length of inside corrosion groove is 200mm, in longitudinally arranging.
8. according to claim 1 a kind of grow defeated buried pipeline checkout equipment power of test checking coupon, it is characterized in that, the mode of described weld defects comprises crackle, lack of penetration lines, incomplete fusion lines, strip hole and indent lines, and the distribution situation of weld defects on pipeline is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
3 ~ 4 o'clock direction at distance starting point 35.795m place, arrange crackle, crack length is 155mm,
10 ~ 11 o'clock direction at distance starting point 35.795m place, arrange crackle, crack length is 140mm,
In 4 ~ 5 o'clock direction at starting point place, the lack of penetration lines that length is 40mm is set,
Starting point place 4 ~ 5 o'clock direction root, the incomplete fusion lines that length is 40mm is set,
In 10 ~ 11 o'clock direction at starting point place, the strip hole that length is 180mm is set,
3 ~ 4 o'clock direction at distance starting point 12.02m place, arranges the incomplete fusion lines that length is 120mm,
Distance starting point 59.8m place 9 o'clock direction root, arrange indent lines, the length of indent lines is 230mm, and the degree of depth is 2mm.
9. according to claim 1 a kind of grow defeated buried pipeline checkout equipment power of test checking coupon, it is characterized in that, described leak holes is through hole, and the distribution situation of leak holes on pipeline is as follows:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface,
The 12 o'clock direction at distance starting point 60.24m place, arrange the through hole that diameter is 10mm, through hole penetrates the inner and outer wall of pipeline, and through hole scribbles anticorrosive coat, and through hole does not produce leakage phenomenon,
The 12 o'clock direction at distance starting point 69.76m place, arrange the through hole that diameter is 10mm, through hole penetrates the inner and outer wall of pipeline, and through hole scribbles anticorrosive coat, and through hole does not produce leakage phenomenon.
10. a kind of coupon growing the checking of defeated buried pipeline checkout equipment power of test according to claim 1, it is characterized in that, it is that user steals the arm connect at pipe side wall that described robber connects arm, and robber connects the distribution situation of arm on pipeline and is:
With the Article 1 circumferential welded seam of low temperature chamber one end close on pipeline for starting point, with the throughput direction of rock gas for visual direction, the radial section of pipeline is considered as clock interface, the 9 o'clock direction place of distance starting point 38.7m, vertically arm is set, arm diameter is the arm of 168mm, propping up tube thickness is 7.3mm, arm comprises the level be connected and lays section and draw section, level is laid section and is parallel to ground, and level lays segment length 1m, and the end of drawing section draws ground, and the end of drawing section is provided with blind plate, the length of drawing section is 1.5m.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897447A (en) * | 2015-06-01 | 2015-09-09 | 广东省特种设备检测研究院 | Sample pipe for verifying testing capability of testing equipment for long-distance buried pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897447A (en) * | 2015-06-01 | 2015-09-09 | 广东省特种设备检测研究院 | Sample pipe for verifying testing capability of testing equipment for long-distance buried pipeline |
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Granted publication date: 20151014 Termination date: 20160601 |