CN107687972A - A kind of fiber enhanced thermoplastic composite plastic tube failure analysis method - Google Patents
A kind of fiber enhanced thermoplastic composite plastic tube failure analysis method Download PDFInfo
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- CN107687972A CN107687972A CN201710707309.8A CN201710707309A CN107687972A CN 107687972 A CN107687972 A CN 107687972A CN 201710707309 A CN201710707309 A CN 201710707309A CN 107687972 A CN107687972 A CN 107687972A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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Abstract
The invention discloses a kind of fiber enhanced thermoplastic composite plastic tube failure analysis method, judge the failure mode of fiber enhanced thermoplastic composite plastic tube by simulating failure cause that the processes such as actual production, transport, installation and military service are likely to occur, the failure morphology of hydraulic pressure failure test in short-term and related explosion data are carried out under different degrees of damage using fiber enhanced thermoplastic composite plastic tube and simulate performance of the fiber enhanced thermoplastic composite plastic tube under arms under environmental condition, to judge such multiple tube failure cause；Forecasting Methodology of the present invention is simple, convenient to carry out, can rapidly and accurately judge the failure cause of fiber enhanced thermoplastic composite plastic tube, oil gas field cause of accident is judged and handled in time, and prevent similar failure situation from occurring again.
Description
Technical field
The present invention relates to oil, Gas Industry structure ageing analysis technical field, and in particular to a kind of fiber reinforcement heat
Thermoplastic plastic multiple tube failure analysis method.
Background technology
Fiber enhanced thermoplastic composite plastic tube has flexible, light weight, corrosion-resistant, ant-scaling, trandfer fluid resistance
It is small, quick construction, simplicity, and continuous dynamic complex forms, and can meet the length needs of engineering, be supplied with rolled form, transports
Conveniently, the advantages that middle non junction, each oil gathering and transportation pipelines, note alcohol pipeline, produced-water reinjection pipeline etc. at home are used,
Length exceedes tens thousand of kilometers, and is still still constantly increasing in quantity.
With the extensive and extensive utilization of fiber enhanced thermoplastic composite plastic tube, appearance and steel during use
Pipe phenomenon and problem different when using, because fiber enhanced thermoplastic composite plastic tube belongs to new conveyance conduit, scene
The features such as usage time is shorter than conventional steel, and technology is new, oil field and producer solve to ask as early as possible there is an urgent need to analyze reason in time
Topic.
Failure cause analysis is carried out exactly, and hidden danger occurs for eliminating accident, works out effective precautionary measures, extensive as early as possible
Demutation production all has important theory significance and engineering real value.Analysis on failure cause can not be lost according to metal pipe material
Effect analysis is indiscriminately imitated, and the reinforced thermoplastics multiple tube in face of rapid growth uses milimeter number, does not judge quick and precisely
The method of such Novel composite pipe failure mode.
The content of the invention
In view of the shortcomings of the prior art, the present invention can by simulating the processes such as actual production, transport, installation and military service
The failure cause that can occur, there is provided a kind of fiber enhanced thermoplastic composite plastic tube failure analysis method, solve existing to such
Non-metal composite pipe failure analysis blindly, not system the problem of.
The present invention is achieved through the following technical solutions：
A kind of fiber enhanced thermoplastic composite plastic tube failure analysis method, multiple tube is entered under different degrees of damage
The row failure morphology of hydraulic pressure failure test and related explosion data and simulation non-metal composite pipe environmental condition under arms in short-term
Under the performance of operating condition of resistance to oil gas field, to judge such multiple tube failure cause.
Further, comprise the following steps that：
Step 1：Choose tubing needed for experiment
More multiple tube tubing in same batch are randomly selected, is divided into multigroup and is numbered；
Step 2：Simulate failure mode
Artificial Embedded defect is carried out to each group tubing respectively：It is divided into score protection layer, a small amount of fibrous fracture, a large amount of fibers to break
Split three kinds of failure modes；
Step 3：Hydraulic pressure failure test in short-term
Explosion bulge test is carried out to the three kinds of composite pipes artificially damaged and the tubing for not carrying out Embedded defect, observation is all kinds of
The explosion pattern of the explosion pattern of multiple tube and non-Embedded defect tubing under failure mode, and note down the data of its explosion；
Step 4：Contrasted with oil gas field scene explosion pattern
Respectively by the explosion pattern of various Embedded defect tubing and oil gas field scene military service scene of the accident tubing explosion pattern
Contrasted, the anti-mode for pushing away and judging that oil gas field scene military service accident tubing damages is carried out according to result；
Step 5：Contrasted with oil gas field scene sample burst strength
Respectively by the intensity of hydraulic pressure demolition in short-term of various Embedded defect tubing and oil gas field scene sample hydraulic pressure demolition in short-term
Intensity is contrasted, and failure mode is further confirmed that according to results of comparison.
Further, for there is the non-metal composite pipe of high/low temperature military service operating mode, the test of analog temperature, selection are carried out first
Non- Embedded defect multiple tube carries out multi-temperature point explosion bulge test, notes down the data of explosion, depicts the curve of the resistance to temperature of multiple tube,
Judge whether temperature is the major influence factors to fail, if can not judge, continues step 1 to step 5.
Further, carry out non-Embedded defect multiple tube and carry out multi-temperature point explosion bulge test, each temperature spot distribution includes extreme
Temperature spot and service temperature.
Further, randomly select and be on active service with scene with the fiber enhanced thermoplastic composite plastic tube tubing 4 in batch, often
Group is divided into 4 groups and is numbered for 1.
Further, according to tubing of the standard GB/T 15560-1995 to prefabricated failure mode and not prefabricated failure mode pipe
Material carries out explosion bulge test, tests its hydraulic pressure failure intensity in short-term, obtains the numerical value.
Further, multiple tube position polyester fiber enhancing polyethylene compound pipe.
The beneficial effects of the invention are as follows：
1. comparing existing fiber enhanced thermoplastic composite plastic tube failure analysis method, the present invention is entered by Embedded defect
Row simulation failure morphology, the analytical form for effectively combining scene temperature and operating mode, method is simple, convenient to carry out, can be quick and precisely
Judge the failure cause of fiber enhanced thermoplastic composite plastic tube in ground；
2. the test method being related in the present invention is related to rationally, experiment process pertains only to hydraulic pressure demolition equipment and set with temperature control
Standby, test operation is operated according to national standard, easy to carry out；
3. the mathematical method being related in the present invention is linearity curve, it is easy to reference to use；
4. this method supports multimetering, there is checking and debugging functions to prediction result.
Brief description of the drawings
The fiber enhanced thermoplastic composite plastic tube of Fig. 1 Embedded defects hydraulic pressure intensity map in short-term.
Fig. 2 polyester fibers reinforced composite pipe hydraulic pressure demolition intensity and environment temperature graph of a relation in short-term.
Embodiment
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
The fiber enhanced thermoplastic composite plastic tube failure analysis method of the present invention comprises the following steps：
Step 1：Choose tubing and preparation needed for experiment.
Randomly select to be on active service with scene and (provide 4 here with the fiber enhanced thermoplastic composite plastic tube tubing 4 in batch
Root is test lower limit, if carrying out analog temperature test, also needs to increase tubing radical at least 3), every group is 1 and is divided into 4 groups
And it is numbered.And prepare other related works.
Step 2：Simulate failure mode.
Instrument is respectively adopted three kinds of artificial score protection layer, a small amount of fibrous fracture, a large amount of fibrous fractures etc. is carried out to tubing
Failure mode it is prefabricated.
Step 3：Hydraulic pressure failure test in short-term.
The tubing of prefabricated failure mode is carried out with not prefabricated failure mode tubing according to standard GB/T 15560-1995 quick-fried
Broken experiment, tests its hydraulic pressure failure intensity in short-term, obtains the numerical value.
Step 4：Contrasted with oil gas field scene explosion pattern.
The explosion pattern of various Embedded defect tubing and oil gas field scene military service scene of the accident explosion pattern are carried out respectively
Contrast.The anti-mode for pushing away and judging to damage is carried out according to result.
Step 5：Contrasted with oil gas field scene sample burst strength.
Respectively by the intensity of hydraulic pressure demolition in short-term of various Embedded defect tubing and oil gas field scene sample hydraulic pressure demolition in short-term
Intensity is contrasted.Failure mode is further confirmed that according to result.
Step 6：Analog temperature is tested.
For there is the non-metal composite pipe of high/low temperature military service operating mode, the test of analog temperature is carried out first.Selection is not pre-
Defect multiple tube processed carries out multi-temperature point and carries out explosion bulge test.Each temperature spot distribution includes extreme temperature point and service temperature.Record
The data of explosion are recorded, depict the curve of the resistance to temperature of multiple tube.Judge whether temperature is the major influence factors to fail.If can not
Judge, then continue step 1 to step 5.
The equipment that this method is related to has instant blasting equipment, temperature control device etc..Hydraulic pressure failure test method presses GB/T in short-term
15560-1995《Plastic pipe hydraulic pressure instant blasting and pressure test method are used in fluid conveying》Perform.
This method is further illustrated below by way of specific embodiment：
Example 1：Judge the failure cause of certain normal temperature military service oil field military service polyester fiber enhancing polyethylene compound pipe
(1) tubing and preparation needed for experiment are chosen.Choose and be on active service with scene with arbitrarily selecting 4 in the pipe of batch
Root, 1 is 1 group, and numbering is 1#, 2#, 3#, 4# respectively.(2) failure mode is simulated.Instrument is respectively adopted to tubing 2#, 3#, 4#
Carry out the prefabricated of three kinds of failure modes such as artificial score protection layer, a small amount of fibrous fracture, a large amount of fibrous fractures.(3) hydraulic pressure in short-term
Failure test.According to tubing 2#, 3#, the 4# of standard GB/T15560-1995 to prefabricated failure mode and not prefabricated failure mode pipe
Material 1# carries out explosion bulge test, tests its hydraulic pressure failure intensity in short-term, obtains the numerical value, 1#, 2#, 3#, 4# multiple tube hydraulic pressure in short-term
Failure intensity numerical value is respectively 30MPa, 30MPa, 12.5MPa and 1.5MPa.(4) compared with oil gas field scene explosion pattern
According to.The explosion pattern of various Embedded defect tubing and oil gas field scene military service scene of the accident explosion pattern are contrasted respectively.
A large amount of fibrous fracture failure modes that the pattern of the tubing performance of field failure is carried out with experiment lab simulation fail hydraulic pressure in short-term
The explosion pattern of experiment coincide, and judges that the failure mode causes the body mechanical damage of multiple tube for site operation.It is prefabricated to lack
Hydraulic pressure intensity is shown in Fig. 1 to sunken fiber enhanced thermoplastic composite plastic tube in short-term.Polyester fiber enhancing polyethylene compound pipe is simulated to draw
Hinder type and the results are shown in Table 1 with hydraulic pressure demolition strength relationship.
Table 1 simulates polyester fiber enhancing polyethylene compound pipe and scratches type and hydraulic pressure demolition strength relationship
Example 2：Judge the failure cause of certain oil field hot environment (45 DEG C) military service polyester fiber enhancing polyethylene compound pipe
(1) tubing and preparation needed for experiment are chosen.Choose and be on active service with scene with arbitrarily selecting 4 in the pipe of batch
Root, 1 is 1 group, and numbering is 1#, 2#, 3#, 4# respectively.(2) test of analog temperature is carried out.0 DEG C, 25 DEG C, 45 DEG C and 65 of selection
DEG C temperature spot is incubated.Temperature spot distribution includes 0 DEG C, 65 DEG C of extreme temperature point and military service temperature 45 C.(3) hydraulic pressure loses in short-term
Effect experiment.Explosion bulge test, test are carried out to tubing 1#, 2#, 3#, 4# of prefabricated failure mode according to standard GB/T15560-1995
Its hydraulic pressure failure intensity in short-term, obtains the numerical value, hydraulic pressure failure intensity numerical value is respectively 1#, 2#, 3#, 4# multiple tube in short-term
29MPa, 26MPa, 21MPa and 17MPa.(4) curve of temperature and hydraulic pressure failure intensity value in short-term is drawn.According to tracing analysis temperature
Spend the influence to live military service Composite pipe properties.This batch of multiple tube presents with the rise of temperature, strength character and is decreased obviously
Gesture, therefore judge that a large amount of declines that failure cause is performance under live service condition (45 DEG C) cause failure.Polyester fiber
Hydraulic pressure demolition intensity is shown in Fig. 2 to reinforced composite pipe with environment temperature relation in short-term.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The skill of the industry
For art personnel it should be appreciated that the present invention is not limited to the above embodiments, described in above-described embodiment and specification is explanation
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these
Changes and improvements all fall within the protetion scope of the claimed invention.
| Numbering | 1# | 2# | 3# | 4# |
| Simulate failure mode | Not prefabricated failure mode | Artificial score protection layer | A small amount of fibrous fracture | A large amount of fibrous fractures |
| Hydraulic pressure demolition intensity | 30MPa | 30MPa | 12.5MPa | 1.5MPa |
The scope of the present invention is defined by the appended claims and its equivalents.
Claims (7)
- A kind of 1. fiber enhanced thermoplastic composite plastic tube failure analysis method, it is characterised in that：By multiple tube different degrees of Damage under carry out the failure morphology of hydraulic pressure failure test in short-term and related explosion data and simulation non-metal composite pipe taking The performance of operating condition of resistance to oil gas field under environmental condition is used as a servant, to judge such multiple tube failure cause.
- 2. fiber enhanced thermoplastic composite plastic tube failure analysis method according to claim 1, it is characterised in that specific Step is as follows：Step 1：Choose tubing needed for experimentMore multiple tube tubing in same batch are randomly selected, is divided into multigroup and is numbered；Step 2：Simulate failure modeArtificial Embedded defect is carried out to each group tubing respectively：It is divided into score protection layer, a small amount of fibrous fracture, a large amount of fibrous fractures three Kind failure mode；Step 3：Hydraulic pressure failure test in short-termExplosion bulge test is carried out to the three kinds of composite pipes artificially damaged and the tubing for not carrying out Embedded defect, observes all kinds of failures The explosion pattern of the explosion pattern of multiple tube and non-Embedded defect tubing under pattern, and note down the data of its explosion；Step 4：Contrasted with oil gas field scene explosion patternThe explosion pattern of various Embedded defect tubing and oil gas field scene military service scene of the accident tubing explosion pattern are carried out respectively Contrast, the anti-mode for pushing away and judging that oil gas field scene military service accident tubing damages is carried out according to result；Step 5：Contrasted with oil gas field scene sample burst strengthRespectively by the intensity of hydraulic pressure demolition in short-term of various Embedded defect tubing and oil gas field scene sample hydraulic pressure demolition intensity in short-term Contrasted, failure mode is further confirmed that according to results of comparison.
- 3. fiber enhanced thermoplastic composite plastic tube failure analysis method according to claim 1, it is characterised in that：For There is the non-metal composite pipe of high/low temperature military service operating mode, carry out the test of analog temperature first, select non-Embedded defect multiple tube to enter The point explosion bulge test of row multi-temperature, the data of explosion are noted down, depict the curve of the resistance to temperature of multiple tube, judge whether temperature is failure Major influence factors, if can not judge, continue step 1 to step 5.
- 4. fiber enhanced thermoplastic composite plastic tube failure analysis method according to claim 2, it is characterised in that：Carry out Non- Embedded defect multiple tube carries out multi-temperature point explosion bulge test, and each temperature spot distribution includes extreme temperature point and service temperature.
- 5. according to the fiber enhanced thermoplastic composite plastic tube failure analysis method described in claim any one of 1-3, its feature It is：Randomly select and be on active service with scene with the fiber enhanced thermoplastic composite plastic tube tubing 4 in batch, every group is 1 common It is divided into 4 groups and is numbered.
- 6. according to the fiber enhanced thermoplastic composite plastic tube failure analysis method described in claim any one of 1-3, its feature It is：Explosion is carried out with not prefabricated failure mode tubing to the tubing of prefabricated failure mode according to standard GB/T 15560-1995 Experiment, tests its hydraulic pressure failure intensity in short-term, obtains the numerical value.
- 7. according to the fiber enhanced thermoplastic composite plastic tube failure analysis method described in claim any one of 1-3, its feature It is：Multiple tube position polyester fiber enhancing polyethylene compound pipe.
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| CN201710707309.8A CN107687972A (en) | 2017-08-17 | 2017-08-17 | A kind of fiber enhanced thermoplastic composite plastic tube failure analysis method |
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| CN201710707309.8A CN107687972A (en) | 2017-08-17 | 2017-08-17 | A kind of fiber enhanced thermoplastic composite plastic tube failure analysis method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108491612A (en) * | 2018-03-15 | 2018-09-04 | 东南大学 | The Finite Element Method of scheme of material selection is provided for multiple tube hydraulic bulging process |
| CN111222791A (en) * | 2020-01-08 | 2020-06-02 | 中国石油集团安全环保技术研究院有限公司 | Intelligent analysis method for accident event multidimensional service |
| CN111474108A (en) * | 2020-03-13 | 2020-07-31 | 中国石油天然气集团有限公司 | Service life prediction method for glass fiber reinforced plastic pipe |
| CN112818582A (en) * | 2021-03-24 | 2021-05-18 | 上海邦麟复合材料科技有限公司 | Fiber reinforced composite material performance judgment method and application thereof |
| CN112924274A (en) * | 2021-01-20 | 2021-06-08 | 中国石油天然气集团有限公司 | Failure analysis method for fiber-reinforced flexible composite oil pipe |
| CN117629772A (en) * | 2023-11-30 | 2024-03-01 | 杭州环申新材料科技股份有限公司 | Thermal explosion detection method, device, system and storage medium |
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| CN105352801A (en) * | 2015-11-24 | 2016-02-24 | 北京卫星制造厂 | Method for testing compression performance of carbon-fiber reinforced resin-based thin-wall composite pipe |
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| JP2002194503A (en) * | 2000-12-28 | 2002-07-10 | Nkk Corp | Steel tube with superior buckling resistance, and production method and evaluation system for the same |
| CN201464264U (en) * | 2009-08-07 | 2010-05-12 | 中国石油天然气集团公司 | Tool for pre-fabricating crack defects of special petroleum pipes |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108491612A (en) * | 2018-03-15 | 2018-09-04 | 东南大学 | The Finite Element Method of scheme of material selection is provided for multiple tube hydraulic bulging process |
| CN111222791A (en) * | 2020-01-08 | 2020-06-02 | 中国石油集团安全环保技术研究院有限公司 | Intelligent analysis method for accident event multidimensional service |
| CN111222791B (en) * | 2020-01-08 | 2024-02-02 | 中国石油天然气集团有限公司 | Intelligent analysis method for accident event multidimensional service |
| CN111474108A (en) * | 2020-03-13 | 2020-07-31 | 中国石油天然气集团有限公司 | Service life prediction method for glass fiber reinforced plastic pipe |
| CN112924274A (en) * | 2021-01-20 | 2021-06-08 | 中国石油天然气集团有限公司 | Failure analysis method for fiber-reinforced flexible composite oil pipe |
| CN112818582A (en) * | 2021-03-24 | 2021-05-18 | 上海邦麟复合材料科技有限公司 | Fiber reinforced composite material performance judgment method and application thereof |
| CN117629772A (en) * | 2023-11-30 | 2024-03-01 | 杭州环申新材料科技股份有限公司 | Thermal explosion detection method, device, system and storage medium |
| CN117629772B (en) * | 2023-11-30 | 2024-06-04 | 杭州环申新材料科技股份有限公司 | Thermal explosion detection method, device, system and storage medium |
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