CN109931983A - A kind of pressurization tubing pressure detection technique of recyclable high intensity long life - Google Patents
A kind of pressurization tubing pressure detection technique of recyclable high intensity long life Download PDFInfo
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- CN109931983A CN109931983A CN201910220945.7A CN201910220945A CN109931983A CN 109931983 A CN109931983 A CN 109931983A CN 201910220945 A CN201910220945 A CN 201910220945A CN 109931983 A CN109931983 A CN 109931983A
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Abstract
The invention discloses a kind of pressurization tubing pressure detection techniques of recyclable high intensity long life, it is characterised in that: the following steps are included: 1. macro -graph: including visual inspection, lens examination, weld joint inspection ruler measurement, flashlight examination, endoscopy, infrared thermoviewer inspection；2. resistance measurement；3. non-destructive testing: including ray detection, ultrasound examination, Magnetic testing and Liquid penetrant testing, EDDY CURRENT and acoustic emission detection；4. physical and chemical inspection: including chemical composition analysis, metal lographic examination and hardness test.Detection technique system of the present invention and it is perfect, and in non-destructive testing use state-of-the-art acoustic emission detection, such detection mode makes testing result more rigorous, more scientific.
Description
Technical field
The invention belongs to be pressurized tubing pressure detection technique field, in particular to a kind of increasing of recyclable high intensity long life
Pressuring oil pipe pressure sensing technologies.
Background technique
It understands in a broad sense, pressure pipeline refers to the pipeline of all receiving internal pressures or external pressure, manages interior medium regardless of it.
Pressure pipeline is a part in pipeline, and pipeline is to convey, distribute, mix, separate, discharge, measure, control and prevent stream
Body flowing, by pipe, pipe fitting, flange, be bolted, gasket, valve, other component parts or pressure-containing parts and set of bearings at
Assembly.Pressure pipeline draw ratio is very big, easily unstability, and stress condition is more more complicated than pressure vessel.Stream in pressure pipeline
Body flow regime is complicated, and buffering leeway is small, and operation conditions change frequency is higher than pressure vessel.
Present, the main problems are as follows:
1, pressure pipeline is also easy to produce defect in manufacture installation process: smelting defect, such as the draw, stomata non-metallic inclusion；
Rolling defect, such as interlayer, folding, hairline, drawing trace, white point；Machine defect, geometry or size be not inconsistent, punching press crackle
Deng；Defect is generated to obtain in heat treatment process, such as material becomes fragile, heat treatment crack；Standards for Pipeline welding Defects is general in pressure pipeline
Store-through is being also most defects, the most common welding defect of pressure pipeline are as follows: lack of penetration, incomplete fusion, stomata, slag inclusion and crackle
Deng.The presence of these defects damages pressure pipeline easily in the use process after preparation, so as to cause some great damages
It loses.
2, existing pressure pipeline detection technique not system, it is not perfect, more fall behind, the case where lacking leak detection inspection easily occurs.
Summary of the invention
Goal of the invention: in order to overcome the above deficiency, the object of the present invention is to provide a kind of pressure sensing technologies, pass through a system
Scientific and effective detection is arranged, so that pressure pipeline is able to effectively detect whether to comply with standard after preparation, thus by unqualified production
Pin Fan factory reforms, and avoids the loss for damaging generation caused by circulating in the market because of substandard product in use process；The technology
By macro -graph, resistance measurement, non-destructive testing and physical and chemical inspection so that detection technique system and it is perfect, and in non-destructive testing
The state-of-the-art acoustic emission detection of Shi Caiyong, for most of lossless detection methods, the shapes and sizes of defect, present position
It is all critically important with direction, because these defect characteristics parameters are directly related to defect omission factor.And for acoustic-emission,
Defect present position and direction are not important, that is, defect present position and direction have no effect on the detection effect of sound emission,
Such detection mode makes testing result more rigorous, more scientific.
Technical solution: to achieve the goals above, the present invention provides a kind of pressurised oils of recyclable high intensity long life
Pipe pressure detection technique, it is characterised in that: the following steps are included:
1. macro -graph: including visual inspection, lens examination, weld joint inspection ruler measurement, flashlight examination, endoscope
It checks, infrared thermoviewer inspection；
2. resistance measurement；
3. non-destructive testing: being examined including ray detection, ultrasound examination, Magnetic testing and Liquid penetrant testing, EDDY CURRENT and sound emission
It surveys；
4. physical and chemical inspection: including chemical composition analysis, metal lographic examination and hardness test.
The test object of heretofore described visual inspection includes verifying material, component, size, the preparation of connector, group
To the quality of, welding, bonding, soldering, flanged joint, screw thread or other connection methods, supporting member, assembly and installation etc. whether
Reach the requirement of specification and engineering design；The detection ordering of the visual inspection be first structure rear surface, from entirety to part, from
Macroscopic view arrives microcosmic；Leak test, erosion resistant coating inspection, vibration inspection, position detection, flexure, sinking are had in the visual detection
And abnormal deformation inspection；Suspension and support inspection, piping component (pipe, valve, flange, expansion joint etc.) check；Cathodic protection dress
Set inspection；Creep measurement points inspection, mark inspection, welding point inspection and surface corrosion inspection；When the visual inspection, such as to meat
Eye examination position with suspicion, position such as with suspicion to visual inspection are checked whether there is naked eyes and are difficult using lens examination
It was found that the tiny crackle in surface, arc crater, stomata the defects of.
Heretofore described weld joint inspection ruler inspection the following steps are included:
1. measuring weld reinforcement: the axis direction that the working face of main scale is parallel to pipeline being close to pipe surface, is then slided
Height gauge and bead contact, the signified indicating value of height gauge, as weld bead height size, weld bead height size are not higher than 2mm at this time；
2. measurement welding seam misalignment amount: the axis direction that the working face of main scale is parallel to pipeline is close to the side of weld seam first,
Then another side contacts of height gauge and weld seam are slided, the signified indicating value of height gauge, as misalignment are taken measurements at this time, misalignment gage
It is very little to be higher than 1.5mm；
3. measuring foot welding height: being close to weldment and weld seam with the working face of main scale, and the another side for sliding height gauge and weldment connects
Touching, the index line of observation and record height gauge, indicated value is foot welding height size, and foot welding height size must not be higher than 2mm；
4. measurement welding angle thickness (weldering larynx): working face two sides being close to weldment respectively first, and slides height gauge and is connect with solder joint
Touching, height gauge meaning indicating value are welding angle thickness (weldering larynx) size, and welding angle thickness (weldering larynx) size must not be higher than 4mm；
5. measurement undercut (spot corrosion) depth: being close to pipe surface with the working face of main scale, then measure undercut using undercut ruler
(spot corrosion) depth, sees undercut ruler indicated value, as undercut depth dimensions, and undercut depth dimensions must not be higher than 0.5mm.
The operating method of heretofore described flashlight examination is that can use flashlight when visually inspecting to pipeline
Cylinder is close to pipe surface parallel radiation, and micro- shallow hole slot of pipe surface and blind crack can clearly be shown at this time,
The uneven phenomenon of bulge and deformation can also be seen more clearly.
Endoscope in heretofore described endoscopy is selected from rigid endoscope, fibrescope and electric video
One of endoscope.
Heretofore described resistance measurement is multimeter measurement, and operating method is that multimeter gear is first transferred to ohm
Shelves, select suitable multiplying power, and by dark red test pencil, the first end thereof contacts pipeline other end is grounded respectively, the electricity shown on read-out display
Number a1 is hindered, a1 is not greater than 80 Ω；Multiplying power is replaced again, by another end in contact laxative remedy of the first end thereof contacts upper flange of dark red test pencil difference
Orchid, resistance the number a2, a2 shown on read-out display are not greater than 0.02 Ω.
The operating method of heretofore described ray detection is that radiographic source, workpiece and film are pressed certain mutual alignment
Be arranged, generally tested object be placed in apart from ray detector meet ray detection standard requirements apart from model
In enclosing, can is tightly attached to sample behind, radiation exposure reasonable time (being selected according to technical chart) is allowed to be exposed.?
Film after exposure is developed in darkroom, is fixed, is washed and is dried.Dry egative film is placed on the display screen of viewbox
Observation, type, the size and number of existing defects are judged according to the blackness of egative film and image.Then press corresponding ray detection
Standard (NB/T 47013), evaluates defect and is classified；The detection device of the ray detection be selected from x-ray flaw detector,
One of gamma-ray detection apparatus, high-energy ray defect-detecting equipment.
The operating method of heretofore described Liquid penetrant testing including the following steps:
1. infiltration: test specimen being impregnated in penetrating fluid first, or penetrating fluid is coated in surface of test piece with sprayer or brush.
When surface of test piece is defective, penetrating fluid just penetrates into defect；
2. cleaning: after transparent liquid for seep fully penetrates into defect, the penetrating fluid of surface of test piece being washed with water or cleaning agent
Fall；
3. imaging: imaging agent being sprayed or is sucked out coated in the penetrating fluid in surface of test piece, making to remain in defect, on surface
Form the yellow-green fluorescence of amplification or the display trace of red；
4. observation: the display trace of fluorescent penetrant is in yellow green under ultraviolet light irradiation, and the display trace of dye penetrant exists
It takes on a red color under natural light, very tiny defect can be found by detecting by an unaided eye.
Heretofore described acoustic emission testing technology mainly includes following two basic step:
1. sealing water filling, sealing pipeline two-port fill the water into pipeline and keep stable water pressure in specified testing pressure, during which
Pressure decline can fill the water ftercompction, and ftercompction pressure is not higher than specified testing pressure；
2. arranging Acoustic radiating instrument, Acoustic radiating instrument detecting sensor is placed in pipeline external surface, observation Acoustic radiating instrument data become
Change.
Above-mentioned technical proposal can be seen that the invention has the following beneficial effects:
1, the present invention provides a kind of pressure sensing technologies, by a series of scientific and effective detections, so that pressure pipeline is being made
It is able to effectively detect whether to comply with standard after standby, reforms, avoided because substandard product is in city so that substandard product is returned factory
Circulation causes the loss that generation is damaged in use process on face；
2, a kind of pressure sensing technologies of the present invention are made by macro -graph, resistance measurement, non-destructive testing and physical and chemical inspection
Detection technique system and it is perfect, and in non-destructive testing use state-of-the-art acoustic emission detection, is for most of non-destructive testings
For method, shapes and sizes, present position and the direction of defect are all critically important, because these defect characteristics parameters are direct
It is related to defect omission factor.And for acoustic-emission, defect present position and direction are not important, that is, position locating for defect
The detection effect that sound emission is had no effect on direction is set, such detection mode makes testing result more rigorous, more scientific.
Specific embodiment
The embodiment of the present invention is described below in detail, in which the same or similar labels are throughly indicated same or like
Element or element with the same or similar functions.It is exemplary below by the embodiment of description, it is intended to for explaining
The present invention, and be not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", " clockwise ", " inverse
The orientation or positional relationship of the instructions such as hour hands " is orientation or positional relationship, is merely for convenience of description of the present invention and simplification of the description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two, unless otherwise restricted clearly.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Embodiment 1
A kind of pressurization tubing pressure detection technique of recyclable high intensity long life, comprising the following steps:
1. macro -graph: including visual inspection, lens examination, weld joint inspection ruler measurement, flashlight examination, endoscope
It checks, infrared thermoviewer inspection；
2. resistance measurement；
3. non-destructive testing: being examined including ray detection, ultrasound examination, Magnetic testing and Liquid penetrant testing, EDDY CURRENT and sound emission
It surveys；
4. physical and chemical inspection: including chemical composition analysis, metal lographic examination and hardness test；
Embodiment 2
A kind of pressurization tubing pressure detection technique of recyclable high intensity long life, comprising the following steps:
1. macro -graph: including visual inspection, lens examination, weld joint inspection ruler measurement, flashlight examination, endoscope
It checks, infrared thermoviewer inspection；
2. resistance measurement；
3. non-destructive testing: being examined including ray detection, ultrasound examination, Magnetic testing and Liquid penetrant testing, EDDY CURRENT and sound emission
It surveys；
4. physical and chemical inspection: including chemical composition analysis, metal lographic examination and hardness test；
Separately have, the test object of the visual inspection includes verifying material, component, size, the preparation of connector, group to, welding, viscous
Connect, be brazed, whether the quality of flanged joint, screw thread or other connection methods, supporting member, assembly and installation etc. reaches specification and
The requirement of engineering design；The detection ordering of the visual inspection be first structure rear surface, from entirety to part, from macroscopic view to micro-
It sees；Leak test, erosion resistant coating inspection, vibration inspection, position detection, flexure, sinking and abnormal change are had in the visual detection
Shape inspection；Suspension and support inspection, piping component (pipe, valve, flange, expansion joint etc.) check；Cathode protection device inspection；It is compacted
Swollen measuring point inspection, mark inspection, welding point inspection and surface corrosion inspection；When the visual inspection, such as have to visual inspection
The position of suspection, position such as with suspicion to visual inspection check whether there is the table that naked eyes are difficult discovery using lens examination
The defects of tiny crackle in face, arc crater, stomata.
In addition, the weld joint inspection ruler inspection the following steps are included:
1. measuring weld reinforcement: the axis direction that the working face of main scale is parallel to pipeline being close to pipe surface, is then slided
Height gauge and bead contact, the signified indicating value of height gauge, as weld bead height size, weld bead height size are not higher than 2mm at this time；
2. measurement welding seam misalignment amount: the axis direction that the working face of main scale is parallel to pipeline is close to the side of weld seam first,
Then another side contacts of height gauge and weld seam are slided, the signified indicating value of height gauge, as misalignment are taken measurements at this time, misalignment gage
It is very little to be higher than 1.5mm；
3. measuring foot welding height: being close to weldment and weld seam with the working face of main scale, and the another side for sliding height gauge and weldment connects
Touching, the index line of observation and record height gauge, indicated value is foot welding height size, and foot welding height size must not be higher than 2mm；
4. measurement welding angle thickness (weldering larynx): working face two sides being close to weldment respectively first, and slides height gauge and is connect with solder joint
Touching, height gauge meaning indicating value are welding angle thickness (weldering larynx) size, and welding angle thickness (weldering larynx) size must not be higher than 4mm；
5. measurement undercut (spot corrosion) depth: being close to pipe surface with the working face of main scale, then measure undercut using undercut ruler
(spot corrosion) depth, sees undercut ruler indicated value, as undercut depth dimensions, and undercut depth dimensions must not be higher than 0.5mm；
In addition, the operating method of the flashlight examination is that flashlight can be used close to pipeline when visually inspecting to pipeline
Surface parallel radiation, micro- shallow hole slot of pipe surface and blind crack can clearly be shown at this time, bulge and deformation
Uneven phenomenon can also see more clearly.
Further more, the endoscope in the endoscopy is selected from rigid endoscope, fibrescope and electric video and peeps
One of mirror.
In addition to this, the resistance measurement is multimeter measurement, and operating method is that multimeter gear is first transferred to ohm
Shelves, select suitable multiplying power, and by dark red test pencil, the first end thereof contacts pipeline other end is grounded respectively, the electricity shown on read-out display
Number a1 is hindered, a1 is not greater than 80 Ω；Multiplying power is replaced again, by another end in contact laxative remedy of the first end thereof contacts upper flange of dark red test pencil difference
Orchid, resistance the number a2, a2 shown on read-out display are not greater than 0.02 Ω.
Furthermore the operating method of the ray detection is that radiographic source, workpiece and film are carried out by certain mutual alignment
Arrangement, is generally placed in tested object in the distance range that ray detector meets ray detection standard requirements,
Can is tightly attached to sample behind, radiation exposure reasonable time (being selected according to technical chart) is allowed to be exposed.Exposure
Film afterwards is developed in darkroom, is fixed, is washed and is dried.Dry egative film is placed on the display screen of viewbox and is seen
It examines, type, the size and number of existing defects is judged according to the blackness of egative film and image.Then press corresponding ray detection mark
Quasi- (NB/T 47013), evaluates defect and is classified；The detection device of the ray detection is selected from x-ray flaw detector, γ
One of ray inspection machine, high-energy ray defect-detecting equipment.
In addition to this, the operating method of the Liquid penetrant testing including the following steps:
1. infiltration: test specimen being impregnated in penetrating fluid first, or penetrating fluid is coated in surface of test piece with sprayer or brush.
When surface of test piece is defective, penetrating fluid just penetrates into defect；
2. cleaning: after transparent liquid for seep fully penetrates into defect, the penetrating fluid of surface of test piece being washed with water or cleaning agent
Fall；
3. imaging: imaging agent being sprayed or is sucked out coated in the penetrating fluid in surface of test piece, making to remain in defect, on surface
Form the yellow-green fluorescence of amplification or the display trace of red；
4. observation: the display trace of fluorescent penetrant is in yellow green under ultraviolet light irradiation, and the display trace of dye penetrant exists
It takes on a red color under natural light, very tiny defect can be found by detecting by an unaided eye.
Further, the acoustic emission testing technology mainly includes following two basic step:
1. sealing water filling, sealing pipeline two-port fill the water into pipeline and keep stable water pressure in specified testing pressure, during which
Pressure decline can fill the water ftercompction, and ftercompction pressure is not higher than specified testing pressure；
2. arranging Acoustic radiating instrument, Acoustic radiating instrument detecting sensor is placed in pipeline external surface, observation Acoustic radiating instrument data become
Change.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as of the invention
Protection scope.
Claims (9)
1. a kind of pressurization tubing pressure detection technique of recyclable high intensity long life, it is characterised in that: the following steps are included:
1. macro -graph: including visual inspection, lens examination, weld joint inspection ruler measurement, flashlight examination, endoscope
It checks, infrared thermoviewer inspection；
2. resistance measurement；
3. non-destructive testing: being examined including ray detection, ultrasound examination, Magnetic testing and Liquid penetrant testing, EDDY CURRENT and sound emission
It surveys；
4. physical and chemical inspection: including chemical composition analysis, metal lographic examination and hardness test.
2. a kind of pressurization tubing pressure detection technique of recyclable high intensity long life according to claim 1, feature
Be: the test object of the visual inspection include verify material, component, size, the preparation of connector, group to, welding, bonding,
Whether the quality of soldering, flanged joint, screw thread or other connection methods, supporting member, assembly and installation etc. reaches specification and work
The requirement of journey design；The detection ordering of the visual inspection be first structure rear surface, from entirety to part, from macroscopic view to microcosmic；
Leak test, erosion resistant coating inspection, vibration inspection, position detection, flexure, sinking and abnormal deformation inspection are had in the visual detection
It looks into；Suspension and support inspection, piping component (pipe, valve, flange, expansion joint etc.) check；Cathode protection device inspection；Compacted swollen survey
Point checks, identifies inspection, welding point inspection and surface corrosion inspection；It is such as with suspicion to visual inspection when the visual inspection
Position, position such as with suspicion to visual inspection, using lens examination, check whether there is naked eyes be difficult discovery surface it is thin
The defects of small crackle, arc crater, stomata.
3. a kind of pressurization tubing pressure detection technique of recyclable high intensity long life according to claim 1, feature
Be: the weld joint inspection ruler inspection the following steps are included:
1. measuring weld reinforcement: the axis direction that the working face of main scale is parallel to pipeline being close to pipe surface, is then slided
Height gauge and bead contact, the signified indicating value of height gauge, as weld bead height size, weld bead height size are not higher than 2mm at this time；
2. measurement welding seam misalignment amount: the axis direction that the working face of main scale is parallel to pipeline is close to the side of weld seam first,
Then another side contacts of height gauge and weld seam are slided, the signified indicating value of height gauge, as misalignment are taken measurements at this time, misalignment gage
It is very little to be higher than 1.5mm；
3. measuring foot welding height: being close to weldment and weld seam with the working face of main scale, and the another side for sliding height gauge and weldment connects
Touching, the index line of observation and record height gauge, indicated value is foot welding height size, and foot welding height size must not be higher than 2mm；
4. measurement welding angle thickness (weldering larynx): working face two sides being close to weldment respectively first, and slides height gauge and is connect with solder joint
Touching, height gauge meaning indicating value are welding angle thickness (weldering larynx) size, and welding angle thickness (weldering larynx) size must not be higher than 4mm；
5. measurement undercut (spot corrosion) depth: being close to pipe surface with the working face of main scale, then measure undercut using undercut ruler
(spot corrosion) depth, sees undercut ruler indicated value, as undercut depth dimensions, and undercut depth dimensions must not be higher than 0.5mm.
4. a kind of pressurization tubing pressure detection technique of recyclable high intensity long life according to claim 1, feature
Be: the operating method of the flashlight examination is that flashlight can be used close to pipeline table when visually inspecting to pipeline
Face parallel radiation, micro- shallow hole slot of pipe surface and blind crack can clearly be shown at this time, bulge and deformation
Uneven phenomenon can also be seen more clearly.
5. a kind of pressurization tubing pressure detection technique of recyclable high intensity long life according to claim 1, feature
Be: endoscope in the endoscopy in rigid endoscope, fibrescope and electric video endoscope one
Kind.
6. a kind of pressurization tubing pressure detection technique of recyclable high intensity long life according to claim 1, feature
Be: the resistance measurement is multimeter measurement, and operating method is that multimeter gear is first transferred to ohms range, and selection is suitable
Multiplying power, by dark red test pencil, the first end thereof contacts pipeline other end is grounded respectively, and resistance the number a1, a1 shown on read-out display must not
Greater than 80 Ω；Multiplying power is replaced again, by another end in contact lower flange of the first end thereof contacts upper flange of dark red test pencil difference, read-out display
Resistance the number a2, a2 of upper display are not greater than 0.02 Ω.
7. a kind of pressurization tubing pressure detection technique of recyclable high intensity long life according to claim 1, feature
Be: the operating method of the ray detection is that radiographic source, workpiece and film are arranged by certain mutual alignment, one
As tested object is placed in the distance range that ray detector meets ray detection standard requirements, can
It is tightly attached to sample behind, radiation exposure reasonable time (being selected according to technical chart) is allowed to be exposed；The film after exposure
Developed in darkroom, be fixed, washed and dried；Dry egative film is placed on the display screen of viewbox and is observed, the bottom of according to
The blackness and image of piece judge type, the size and number of existing defects；Then press corresponding ray detection standard (NB/T
47013), defect is evaluated and is classified；The detection device of the ray detection is selected from x-ray flaw detector, gamma ray inspection
One of machine, high-energy ray defect-detecting equipment.
8. a kind of pressurization tubing pressure detection technique of recyclable high intensity long life according to claim 1, feature
It is: the operating method of the Liquid penetrant testing including the following steps:
1. infiltration: test specimen being impregnated in penetrating fluid first, or penetrating fluid is coated in surface of test piece with sprayer or brush；
When surface of test piece is defective, penetrating fluid just penetrates into defect；
2. cleaning: after transparent liquid for seep fully penetrates into defect, the penetrating fluid of surface of test piece being washed with water or cleaning agent
Fall；
3. imaging: imaging agent being sprayed or is sucked out coated in the penetrating fluid in surface of test piece, making to remain in defect, on surface
Form the yellow-green fluorescence of amplification or the display trace of red；
4. observation: the display trace of fluorescent penetrant is in yellow green under ultraviolet light irradiation, and the display trace of dye penetrant exists
It takes on a red color under natural light, very tiny defect can be found by detecting by an unaided eye.
9. a kind of pressurization tubing pressure detection technique of recyclable high intensity long life according to claim 1, feature
Be: the acoustic emission testing technology mainly includes following two basic step:
1. sealing water filling, sealing pipeline two-port fill the water into pipeline and keep stable water pressure in specified testing pressure, during which
Pressure decline can fill the water ftercompction, and ftercompction pressure is not higher than specified testing pressure；
2. arranging Acoustic radiating instrument, Acoustic radiating instrument detecting sensor is placed in pipeline external surface, observation Acoustic radiating instrument data become
Change.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046923A (en) * | 2021-09-28 | 2022-02-15 | 中交四航局第四工程有限公司 | Nondestructive testing method for post-tensioned prestressed corrugated pipe |
| CN117470302A (en) * | 2023-10-30 | 2024-01-30 | 本溪市特种设备监督检验所 | Pressure pipeline parameter inspection management system based on computer |
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| CN102927448A (en) * | 2012-09-25 | 2013-02-13 | 北京声迅电子股份有限公司 | Undamaged detection method for pipeline |
| CN106896299A (en) * | 2015-12-17 | 2017-06-27 | 中国石油天然气股份有限公司 | The method of testing of the insulating properties of pipe-line wrapping device |
| CN108591834A (en) * | 2017-11-20 | 2018-09-28 | 北京无线电计量测试研究所 | A kind of pepe monitoring system |
| CN109141516A (en) * | 2018-07-05 | 2019-01-04 | 华电电力科学研究院有限公司 | A kind of thermal power plant's high-temperature and pressure pipeline detection data management system and application method |
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| CN114046923A (en) * | 2021-09-28 | 2022-02-15 | 中交四航局第四工程有限公司 | Nondestructive testing method for post-tensioned prestressed corrugated pipe |
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Application publication date: 20190625 |