CN107367432A - The ageing test apparatus and life-span prediction method of PE pipelines under a kind of surge pressure - Google Patents
The ageing test apparatus and life-span prediction method of PE pipelines under a kind of surge pressure Download PDFInfo
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- CN107367432A CN107367432A CN201710675386.XA CN201710675386A CN107367432A CN 107367432 A CN107367432 A CN 107367432A CN 201710675386 A CN201710675386 A CN 201710675386A CN 107367432 A CN107367432 A CN 107367432A
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- 230000032683 aging Effects 0.000 title claims abstract description 72
- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000523 sample Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 10
- 230000015556 catabolic process Effects 0.000 claims description 9
- 238000006731 degradation reaction Methods 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 8
- 230000006353 environmental stress Effects 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 125000004122 cyclic group Chemical group 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000003345 natural gas Substances 0.000 abstract description 3
- 230000003679 aging effect Effects 0.000 abstract 1
- 238000007796 conventional method Methods 0.000 abstract 1
- 239000004698 Polyethylene Substances 0.000 description 16
- 229920000573 polyethylene Polymers 0.000 description 16
- 230000005540 biological transmission Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 241000009298 Trigla lyra Species 0.000 description 4
- -1 Polyethylene Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004643 material aging Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229930091051 Arenine Natural products 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of ageing test apparatus of PE pipelines under surge pressure, the gas load of whole pipeline is provided by pressure supply device, the air pressure in pipeline is adjusted by pressure sensor, motor-operated control valve and central controller collective effect, repeat injection pressure pressure leak process, form fatigue and cyclic load, and test section aging is made by aging equipment, this device changes the research of conventional single factor test aging, a variety of environmental stresses are combined together, form a kind of laboratory environment of simcity natural gas line actual condition.The invention further relates to a kind of aging life-span Forecasting Methodology of PE pipelines under surge pressure, the pipe samples of aging are taken out by the specific cycle, carry out the test of mechanical property and physicochemical property, obtain related data, to measure the change of the ageing properties of any environment temperature and any pipeline, compared to conventional method, there is the advantages of simple, efficient, cost is low.
Description
Technical field
The present invention relates to PE pipeline inspection technologies field, more particularly to the degradation of PE pipelines fills under a kind of surge pressure
Put and life-span prediction method.
Background technology
Polyethylene (PE) is a kind of high molecular polymer being widely used in gas transmission, feedwater field, has good power
Performance and excellent decay resistance are learned, at present, enters in China and " under the big situation to mould Dai Gang ", is largely put into
In production application.But among the installing and using of polyethylene (PE) pipeline, have unavoidably because burn into microorganism decomposition, heat
Destruction, wherein ageing failure problem caused by oxygen aging and third party's construction reason are particularly it is noted that but in recent years
Among ageing research, usually ignore the gas load fluctuated during gas transmission under actual condition fatigue effect for caused by pipeline, lead
Result of study and actual conditions is caused to have relatively large deviation.Therefore, it is necessary to develop a kind of pipeline aging for more conforming to actual condition
Experimental rig and life-span prediction method.
The content of the invention
Based on this, it is an object of the present invention to provide a kind of ageing test apparatus of PE pipelines under surge pressure, the device
A variety of environmental factors are combined together, more conform to actual condition.
Another object of the present invention is to, there is provided the aging life-span Forecasting Methodology of PE pipelines under a kind of surge pressure, pass through
This method predicts the life-span of PE pipelines, and theoretical reference is provided for engineering use.
The purpose of the present invention is achieved through the following technical solutions：The degradation dress of PE pipelines under a kind of surge pressure
Put, including pressure supply device, the first pipeline, the second pipeline, aging equipment and regulator, the pressure supply device and aging equipment lead to
Cross the first pipeline and the second pipeline connects to form circulation loop, test section is placed in the aging equipment；The regulator
Including first pressure sensor, the first motor-operated control valve, second pressure sensor, the second motor-operated control valve and central controller,
The first pressure sensor and the first motor-operated control valve are on the first pipeline, the second pressure sensor and second electronic
Control valve on the second pipeline, with first pressure sensor, the first motor-operated control valve, second press respectively by the central controller
Force snesor, the electrical connection of the second motor-operated control valve, the central controller receive the signal of first pressure sensor to control the
The opening and closing of one motor-operated control valve, the central controller receive the signal of second pressure sensor to control the second motor-operated control valve
Opening and closing.
Relative to prior art, the present invention is provided the gas load of whole pipeline by pressure supply device, passes through pressure sensing
The air pressure in pipeline is adjusted for device, motor-operated control valve and central controller collective effect, repeats injection pressure pressure leak process, is formed
Fatigue and cyclic load, and test section aging is made by aging equipment, so as to provide the pipeline aging under a kind of surge pressure
Experimental rig, this device change the research of conventional single factor test aging, a variety of environmental stresses are combined together, form one
The laboratory environment of kind simcity natural gas line actual condition, is more applicable for actual conditions.
Further, pressure-reducing valve is additionally provided with first pipeline, the pressure-reducing valve is connected with aging equipment.Pressure-reducing valve conduct
Safety device, the pressure played a part of in control piper are no more than preset value, prevent that the safety that air pressure inside surge is brought is hidden
Suffer from.
Further, fixture is additionally provided with the aging equipment, the fixture includes fixture garter spring and fixture end socket；The card
Have and sealing necklace is provided with garter spring；The fixture end socket is provided with perforate.Fixture garter spring to be closely connected with test section,
Fixture end socket is provided with perforate to the pipeline gas transmission pressure release needs that are connected.
Further, sealing ring is provided between first pipeline, the second pipeline and aging equipment.Sealing ring is ensureing to manage
The environment in sealing property and aging equipment between road and aging equipment is constant.
Further, the aging equipment is baking oven.Baking oven plays heat effect, there is provided hot environment stress, makes developmental tube
Duan Laohua.
Further, the pressure supply device is compressor.Compressor provides gas for pipeline and carried as gas generating unit
Lotus, while air extractor is also served as, ensure that gas load fluctuates within the specific limits in pipeline.
Further, the central controller is PLC.Each parameter value is set by PLC programmings, according to pressure sensing
Pressure change in the feedback signal control piper of device.
Present invention also offers a kind of aging life-span Forecasting Methodology of PE pipelines under surge pressure, this method is based on the present invention
Described ageing test apparatus, comprises the following steps：
S1：It is T in surge pressure and temperatureiUnder conditions of, degradation is carried out to sample；
S2：After degradation terminates, T is measurediAt a temperature of sample elongation at break δi；
S3：With the elongation at break δ of samplei50% end of life as sample material, calculate TiAt a temperature of sample
Life-span ti；
S4：Data processing is carried out, obtains life-span tiWith temperature TiFunctional relation, to predict the sample under arbitrary temp
Material lifetime；
Wherein, i value 1,2,3 ..., N, N for experiment count.
Relative to prior art, the present invention carries out aging life-span prediction under surge pressure to pipeline, ripple during due to gas transmission
Dynamic gas can produce fatigue effect for pipeline, therefore the present invention is forming the feelings of fatigue load by surge pressure to pipeline
Degradation is carried out under condition and more conforms to actual condition；And pass through the present invention aging life-span Forecasting Methodology obtain life-span with
The functional relation of temperature, the material lifetime under arbitrary temp can be predicted, have it is simple, efficiently, low excellent of cost
Point.
Further, in step S1, the surge pressure, which is pressed, to pressurize-changes without pressure mechanical periodicity, or sine wave, or square wave
Change.
Further, the pressurization-time ratio without pressure mechanical periodicity is 1:1~1:3.
Further, in step S4, A Leiniwusi equations lnt is utilizedi=A+B/Ti, data are handled, make lnti=
yi, 1/Ti=xi, slope B calculation formula is：Intercept A calculation formula is：So as to obtain the functional relation in life-span and temperature.
In order to more fully understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Brief description of the drawings
Fig. 1 be embodiment a kind of surge pressure under PE pipelines ageing test apparatus structural representation.
Fig. 2 is the fixture structure schematic diagram of embodiment.
Fig. 3 be embodiment pressurization-without pressure time ratio be 1:Material property aging figure in the case of 1.
Fig. 4 be embodiment pressurization-without pressure time ratio be 1:Material property aging figure in the case of 3.
Embodiment
Referring to Fig. 1, its structural representation for the ageing test apparatus of PE pipelines under a kind of surge pressure of the present embodiment
Figure.The ageing test apparatus includes compressor 1, pipeline 2, baking oven 6, first pressure sensor 4, the first motor-operated control valve 3, second
Pressure sensor 8, the second motor-operated control valve 9, central controller 10 and pressure-reducing valve 5.
Compressor 1 and baking oven 6 form circulation loop by the connection of pipeline 2, and test section 7 is placed in baking oven 6.
Specifically, compressor 1 is used as gas generating unit, gas load is provided for pipeline, while also serves as air extractor,
Ensure that gas load fluctuates within the specific limits in pipeline.Baking oven 6 plays heat effect, there is provided hot environment stress, makes experiment
The aging of pipeline section 7.It is fitted close between pipeline 2 and baking oven 6 by sealing ring to ensure sealing property, and ensures temperature in baking oven 6
Environment is constant.
Further, fixture 11 is additionally provided with baking oven 6, for clamp assay pipeline section 7.The high temperature resistant of fixture 11, ensures in height
Under temperature, caused deformational stress does not influence experiment and is smoothed out between fixture 11 and test section.In the present embodiment, fixture 11 has
There are nine branches, for clamping multiple parallel samples, ensure the science of experimental data.Referring to Fig. 2, it is the knot of fixture 11
Structure schematic diagram.Specifically, fixture 11 includes fixture garter spring 13 and fixture end socket 12, fixture garter spring 13 is to tight with test section 7
Close fit connects, and its interior is provided with seals necklace, ensures good sealing property；Fixture end socket 12 is provided with perforate, connects to coordinate
Taking over road gas transmission pressure release needs.
Pipeline 2 includes the first pipeline and the second pipeline, and the motor-operated control valve 3 of first pressure sensor 4 and first is located at first
On pipeline, the motor-operated control valve 9 of second pressure sensor 8 and second is on the second pipeline, and central controller 10 is respectively with first
Pressure sensor 4, the first motor-operated control valve 3, second pressure sensor 8, the second motor-operated control valve 9 electrically connect.
Specifically, first pressure sensor 4 and second pressure sensor 8 are used for the air pressure for monitoring channel interior, and by gas
Pressure signal is converted to electric signal, is then transmit to central controller 10.Central controller 10 receives to be sensed from first pressure
During the signal of device 4, regulation is made to the first motor-operated control valve 3, controls the opening and closing of the first motor-operated control valve 3；Central controller 10
When receiving the signal from second pressure sensor 8, regulation is made to the second motor-operated control valve 9, controls the first Electronic control
The opening and closing of valve 9.In the present embodiment, central controller 10 sets each parameter value, when overpressure change reaches by PLC programming realizations
To threshold value, central controller 10 receives the feedback signal from pressure sensor, controls the opening and closing of motor-operated control valve, for experiment
Pipeline section charge and discharge pressure, the pressure in control piper change within the specific limits.
Pressure-reducing valve 5 is connected on the first pipeline with baking oven 6.Specifically, pressure-reducing valve 5 is carried out by elevated-temperature seal rubber
Sealing, the pressure played a part of in control piper are no more than preset value, the potential safety hazard for preventing air pressure inside surge from bringing, together
When ensure experimenter safety.
The operation principle of the present embodiment is：Compressor 1 is transported to gas load entirely as power set by pipeline 2
In the ageing test apparatus of PE pipelines, there is provided the gas load of whole pipeline；Central controller 10 and first pressure sensor 4,
First motor-operated control valve 3, second pressure sensor 8, the second motor-operated control valve 9 collectively form voltage-regulating system, are detecting in pipe
When pressure change reaches threshold value, the first motor-operated control valve 3 of control is opened, and carries out defeated pressure, or, control the second motor-operated control valve 9
Open, carry out pressure release.Specifically, the original state of the second motor-operated control valve 9 is closed, gas pressurized in test section 7, reach demarcation
During pressure, the first motor-operated control valve 3 is closed with compressor 1, forms steady load, and one section is maintained under the control of central controller 10
Time；Then by controlling the pressure release of the second motor-operated control valve 9, cyclic program is provided with central controller 10, forms fatigue and cyclic
Load；Heated by ageing oven 6, form hot environment stress, aging is carried out to test section 7.
Relative to prior art, the present invention is provided the gas load of whole pipeline by pressure supply device, passes through pressure sensing
The air pressure in pipeline is adjusted for device, motor-operated control valve and central controller collective effect, repeats injection pressure pressure leak process, is formed
Fatigue and cyclic load, and test section aging is made by aging equipment, so as to provide the pipeline aging under a kind of surge pressure
Experimental rig, this device change the research of conventional single factor test aging, a variety of environmental stresses are combined together, form one
The laboratory environment of kind simcity natural gas line actual condition, is more applicable for actual conditions.
Based on above-mentioned ageing test apparatus, the aging life-span that the present embodiment additionally provides PE pipelines under a kind of surge pressure is pre-
Survey method, under surge pressure and at different temperature, point three time points take out three groups of parallel test sections, right
It carries out the test of mechanical property and physicochemical property, specifically includes following steps：
Step 1：At each temperature, three groups of samples, corresponding three sampling time points are placed, and every group of sample includes three
Individual parallel sample；
Step 2：Sample is taken out in three sampling time points respectively, measures its elongation at break, and it is flat at every group three
It is averaged in row sample, respectively obtains δ1、δ2、δ3, and other related physicochemical properties；
Step 3：Respectively using the terminal in the 50% of every group of elongation at break as sample material life-span, the life-span is made with breaking
The regression curve of elongation is split, predicts the end of life t at each temperature1、t2、t3；
Step 4：End of life corresponding to each temperature is as shown in the table：
| Temperature (DEG C) | T1 | T2 | T3 |
| Life-span (h) | t1 | t2 | t3 |
Using A Leiniwusi equation lnt=A+B/T, above-mentioned data are handled, make lnt=y, 1/T=x, slope B
Calculation formula be：Intercept A calculation formula is：So as to obtain
The functional relation of life-span and temperature is obtained, the sample material life-span under arbitrary temp can be carried out according to the functional relation pre-
Survey.
Relative to prior art, the present invention carries out aging life-span prediction under surge pressure to pipeline, ripple during due to gas transmission
Dynamic gas can produce fatigue effect for pipeline, therefore the present invention is forming the feelings of fatigue load by surge pressure to pipeline
Degradation is carried out under condition and more conforms to actual condition；And pass through the present invention aging life-span Forecasting Methodology obtain life-span with
The functional relation of temperature, the material lifetime under arbitrary temp can be predicted, have it is simple, efficiently, low excellent of cost
Point.
Based on above-mentioned ageing test apparatus, the variation pattern of gas load during change experiment, to degradation result
Studied, contrast is as follows：
Contrast experiment one：Under steady temperature (80 DEG C), constant pressure amplitude (0.8MPa), pass through PLC programming Controls so that
Pressure change by pressurization-without pressure mechanical periodicity, and time scale respectively press 1:1 and 1:3 changes, ageing time 800h, are obtained
The ageing results of sample material.Refer to Fig. 3 and Fig. 4, its be respectively pressurize-without pressure time ratio be 1:1 and 1:Material in the case of 3
Expect ageing of performance figure.It can be seen that the force-time curve in the case of two kinds is significantly different, maximum load changes,
Pressurization-without pressure time ratio be 1:In the case of 1, material aging obtains comparatively fast.
Contrast experiment two：Steady temperature (80 DEG C), constant pressure amplitude (0.8MPa), under the constant variation cycle (1200s),
By PLC programming Controls, change gas load loading form, load sinusoidal wave pressure and rectangle wave pressure, ageing time respectively
For 800h, the maximum tensile strength is recorded.As a result it is that the maximum tensile strength 1690N, square wave loads under Sine-wave loading form
Under form, the maximum tensile strength 1860N.It can thus be concluded that under Sine-wave loading form, material aging obtains comparatively fast.
Embodiment described above only expresses one embodiment of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.
Claims (10)
- A kind of 1. ageing test apparatus of PE pipelines under surge pressure, it is characterised in that：Including pressure supply device, the first pipeline, Two pipelines, aging equipment and regulator, the pressure supply device and aging equipment connect shape by the first pipeline and the second pipeline Into circulation loop, test section is placed in the aging equipment；The regulator includes first pressure sensor, first electronic Control valve, second pressure sensor, the second motor-operated control valve and central controller, the first pressure sensor and first electronic Control valve is on the first pipeline, and the second pressure sensor and the second motor-operated control valve are on the second pipeline, in described Pivot controller is electrically connected with first pressure sensor, the first motor-operated control valve, second pressure sensor, the second motor-operated control valve respectively Connect, the central controller receives the signal of first pressure sensor to control the opening and closing of the first motor-operated control valve, the maincenter Controller receives the signal of second pressure sensor to control the opening and closing of the second motor-operated control valve.
- 2. ageing test apparatus according to claim 1, it is characterised in that：Pressure-reducing valve is additionally provided with first pipeline, The pressure-reducing valve is connected with aging equipment.
- 3. ageing test apparatus according to claim 1, it is characterised in that：Fixture, institute are additionally provided with the aging equipment Stating fixture includes fixture garter spring and fixture end socket；Sealing necklace is provided with the fixture garter spring；The fixture end socket is provided with perforate.
- 4. ageing test apparatus according to claim 1, it is characterised in that：First pipeline, the second pipeline and aging Sealing ring is provided between device.
- 5. ageing test apparatus according to claim 1, it is characterised in that：The aging equipment is baking oven；The voltage supply Device is compressor.
- 6. ageing test apparatus according to claim 1, it is characterised in that：The central controller is PLC.
- 7. the aging life-span Forecasting Methodology of PE pipelines under a kind of surge pressure, the aging life-span Forecasting Methodology are based on claim 1 Described ageing test apparatus, it is characterised in that：Comprise the following steps：S1：It is T in surge pressure and temperatureiUnder conditions of, degradation is carried out to sample；S2：After degradation terminates, T is measurediAt a temperature of sample elongation at break δi；S3：With the elongation at break δ of samplei50% end of life as sample material, calculate TiAt a temperature of sample life-span ti；S4：Data processing is carried out, obtains life-span tiWith temperature TiFunctional relation, to predict the sample material under arbitrary temp Life-span；Wherein, i value 1,2,3 ..., N, N for experiment count.
- 8. aging life-span Forecasting Methodology according to claim 7, it is characterised in that：In step S1, the surge pressure is pressed Pressurization-without pressure mechanical periodicity, or sine wave change, or square wave change.
- 9. aging life-span Forecasting Methodology according to claim 8, it is characterised in that：The pressurization-without pressure mechanical periodicity Time ratio is 1:1~1:3.
- 10. aging life-span Forecasting Methodology according to claim 7, it is characterised in that：In step S4, A Leiniwusi is utilized Equation lnti=A+B/Ti, data are handled, make lnti=yi, 1/Ti=xi, slope B calculation formula is：Intercept A calculation formula is：So as to obtain life-span and temperature Functional relation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710675386.XA CN107367432A (en) | 2017-08-09 | 2017-08-09 | The ageing test apparatus and life-span prediction method of PE pipelines under a kind of surge pressure |
| PCT/CN2017/119035 WO2019029103A1 (en) | 2017-08-09 | 2017-12-27 | Aging test device for pe pipe under fluctuating pressure and lifetime prediction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710675386.XA CN107367432A (en) | 2017-08-09 | 2017-08-09 | The ageing test apparatus and life-span prediction method of PE pipelines under a kind of surge pressure |
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| CN107367432A true CN107367432A (en) | 2017-11-21 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896747A (en) * | 2018-06-06 | 2018-11-27 | 昆明理工大学 | A kind of PPR pipe longevity test device |
| WO2019029103A1 (en) * | 2017-08-09 | 2019-02-14 | 广州特种承压设备检测研究院 | Aging test device for pe pipe under fluctuating pressure and lifetime prediction method |
| US20200197942A1 (en) * | 2018-12-19 | 2020-06-25 | Fenwal, Inc. | Methods and systems for mating disposable syringes with pneumatic drivers without breaking sterility |
| CN113586949A (en) * | 2021-08-04 | 2021-11-02 | 上海氢枫能源技术有限公司 | Method and system for monitoring service life of hydrogen storage cylinder group |
| CN115165716A (en) * | 2022-06-22 | 2022-10-11 | 北京交通大学 | Automatic pressure control plastic pipeline thermo-oxidative aging test platform and use method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072838A (en) * | 2010-12-15 | 2011-05-25 | 广州合成材料研究院有限公司 | Reliability testing device with temperature control and pressure liquid circulation for sealing fittings |
| CN102478471A (en) * | 2010-11-22 | 2012-05-30 | 上海汽车制动系统有限公司 | Method for rapidly testing service life of flexible tube and test bed thereof |
| CN102589969A (en) * | 2012-02-28 | 2012-07-18 | 合肥工业大学 | Method for evaluating fatigue reliability of piping of inverter air conditioner |
| CN203069459U (en) * | 2012-12-05 | 2013-07-17 | 西北电网有限公司 | Insulator internal pressure testing device |
| CN203259431U (en) * | 2013-05-14 | 2013-10-30 | 浙江伟星新型建材股份有限公司 | Alternative positive/negative pressure testing device for plastic pipelines |
| CN103852225A (en) * | 2012-11-29 | 2014-06-11 | 中国石油天然气集团公司 | Internal-pressure fatigue test device for well-completion pipe string of underground gas storage reservoir and test method thereof |
| CN105445111A (en) * | 2015-12-30 | 2016-03-30 | 北京汽车研究总院有限公司 | Experimental equipment for testing hose |
| CN106442186A (en) * | 2016-09-20 | 2017-02-22 | 天津航天瑞莱科技有限公司 | Novel rapid pipeline pressurizing endurance test system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3471078B2 (en) * | 1994-05-31 | 2003-11-25 | 祝治 朝倉 | Method of detecting corrosion state of water supply and drainage device and water supply and drainage device provided with corrosion state detection device of water supply and drainage device |
| CN103033350B (en) * | 2012-11-27 | 2015-06-24 | 中国市政工程华北设计研究总院 | Accelerated failure experimental method for gas pressure regulator and experimental device thereof |
| CN104266961B (en) * | 2014-10-16 | 2016-07-06 | 北京交通大学 | The hot oxygen accelerated aging tester of in-service polyethylene pipe and life-span prediction method |
| CN205749226U (en) * | 2016-05-12 | 2016-11-30 | 远东电缆有限公司 | A kind of wisdom energy cross-linked polyethylene insulated cable aging life-span assesses system |
| CN107367432A (en) * | 2017-08-09 | 2017-11-21 | 广州特种承压设备检测研究院 | The ageing test apparatus and life-span prediction method of PE pipelines under a kind of surge pressure |
-
2017
- 2017-08-09 CN CN201710675386.XA patent/CN107367432A/en active Pending
- 2017-12-27 WO PCT/CN2017/119035 patent/WO2019029103A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478471A (en) * | 2010-11-22 | 2012-05-30 | 上海汽车制动系统有限公司 | Method for rapidly testing service life of flexible tube and test bed thereof |
| CN102072838A (en) * | 2010-12-15 | 2011-05-25 | 广州合成材料研究院有限公司 | Reliability testing device with temperature control and pressure liquid circulation for sealing fittings |
| CN102589969A (en) * | 2012-02-28 | 2012-07-18 | 合肥工业大学 | Method for evaluating fatigue reliability of piping of inverter air conditioner |
| CN103852225A (en) * | 2012-11-29 | 2014-06-11 | 中国石油天然气集团公司 | Internal-pressure fatigue test device for well-completion pipe string of underground gas storage reservoir and test method thereof |
| CN203069459U (en) * | 2012-12-05 | 2013-07-17 | 西北电网有限公司 | Insulator internal pressure testing device |
| CN203259431U (en) * | 2013-05-14 | 2013-10-30 | 浙江伟星新型建材股份有限公司 | Alternative positive/negative pressure testing device for plastic pipelines |
| CN105445111A (en) * | 2015-12-30 | 2016-03-30 | 北京汽车研究总院有限公司 | Experimental equipment for testing hose |
| CN106442186A (en) * | 2016-09-20 | 2017-02-22 | 天津航天瑞莱科技有限公司 | Novel rapid pipeline pressurizing endurance test system |
Non-Patent Citations (1)
| Title |
|---|
| 兰惠清 等: "承压燃气聚乙烯管道热氧老化规律研究", 《天然气工业》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019029103A1 (en) * | 2017-08-09 | 2019-02-14 | 广州特种承压设备检测研究院 | Aging test device for pe pipe under fluctuating pressure and lifetime prediction method |
| CN108896747A (en) * | 2018-06-06 | 2018-11-27 | 昆明理工大学 | A kind of PPR pipe longevity test device |
| CN108896747B (en) * | 2018-06-06 | 2021-03-02 | 昆明理工大学 | PPR pipe life-span verifying attachment |
| US20200197942A1 (en) * | 2018-12-19 | 2020-06-25 | Fenwal, Inc. | Methods and systems for mating disposable syringes with pneumatic drivers without breaking sterility |
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| US11904147B2 (en) * | 2018-12-19 | 2024-02-20 | Fenwal, Inc. | Methods and systems for mating disposable syringes with pneumatic drivers without breaking sterility |
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| CN115165716A (en) * | 2022-06-22 | 2022-10-11 | 北京交通大学 | Automatic pressure control plastic pipeline thermo-oxidative aging test platform and use method thereof |
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