CN109443948A - Croop property pilot system and test method under a kind of high temperature and high pressure environment - Google Patents
Croop property pilot system and test method under a kind of high temperature and high pressure environment Download PDFInfo
- Publication number
- CN109443948A CN109443948A CN201811524387.5A CN201811524387A CN109443948A CN 109443948 A CN109443948 A CN 109443948A CN 201811524387 A CN201811524387 A CN 201811524387A CN 109443948 A CN109443948 A CN 109443948A
- Authority
- CN
- China
- Prior art keywords
- module
- test
- clamping unit
- kettle
- difference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
-
- 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
- G01N2203/0003—Steady
-
- 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
- G01N2203/0017—Tensile
-
- 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
- G01N2203/0075—Strain-stress relations or elastic constants
-
- 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
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0232—High pressure
-
- 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
- G01N2203/025—Geometry of the test
- G01N2203/0254—Biaxial, the forces being applied along two normal axes of the specimen
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- 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 invention discloses croop property pilot systems under a kind of high temperature and high pressure environment, including experimental rig and control device, experimental rig includes heating autoclave, foil gauge, upper clamping unit and lower clamping unit, and heating autoclave includes upper kettle and lower kettle, and upper kettle and lower kettle have flexible part；Control device includes controller, signal processing module, input module, temperature sensor, pressure sensor, heating component, pressure-applying unit, upper drive module, lower drive module and display module.The invention also discloses croop property test methods under a kind of high temperature and high pressure environment.The present invention is using heating autoclave, high temperature and pressure croop property experimental enviroment can be provided to test specimen, flexible part can follow the displacement of test specimen, therefore frictional force is not generated between sealing ring and test specimen, avoid the influence to test stress, measurement accuracy is improved, during croop property test, the creep curve and average creep curve of each foil gauge can be obtained.
Description
Technical field
The invention belongs to testing of materials technical fields, and in particular to croop property pilot system under a kind of high temperature and high pressure environment
And test method.
Background technique
In nuclear power primary Ioops safe end dissimilar metal welding point, a large amount of low-alloy steel, Nickel-Based Steel are used
And austenitic stainless steel, but under harsh Service Environment stress corrosion cracking easily occurs for these materials.Since stress corrosion is opened
Splitting is a slowly growing crack process under corrosive environment, stress state and material property collective effect, in high temperature and pressure
Creep can occur for wlding metal in environment, cause the variation for splitting sharp stress and strain fields, and then influence cracking corrosion crack
Spreading rate.Therefore the Creep Rule of research nuclear power primary Ioops safe end dissimilar metal welding point has the safety of nuclear power
Significance.
The creep test carried out at present, be sample is stretched, is compressed, is bent, creep etc., mainly for detection of,
The mechanical performance of research metal material, the static creep-rupture tension of nonmetallic, composite material and its product, creep, stress corrosion etc.
Test can be used for measuring gold under the media environments such as NaOH, NO3-, H2S, CL- solution, methanol, N2O4, NH3, humid air and water
The stress corrosion destruction characteristic of category is tested, and records the elongation of tensile load and sample marking distance section part that sample is born in real time,
Under conditions of stress corrosion cannot be excited rapidly by test methods such as constant load, permanent deformations, ductile material stress corrosion is determined
Sensibility, the accelerated test method for summarizing Creep Rule.
When studying creep process of the nuclear power primary Ioops safe end dissimilar metal welding point under high temperature and high pressure environment, lead to
Frequently with the method for measurement creep be not suitable for carrying out under high temperature and high pressure environment.Therefore need one kind in high temperature and high pressure environment
The device and method of croop property test can be carried out to nuclear power primary Ioops safe end dissimilar metal welding point down.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of high temperature and pressure
Croop property pilot system and test method under environment, use heating autoclave, can provide high temperature and pressure creep properties to test specimen
Energy experimental enviroment, upper kettle and lower kettle all have flexible part, and flexible part can follow the displacement of test specimen, therefore sealing ring and test specimen
Between do not generate frictional force, avoid the influence to test stress, improve measurement accuracy, croop property test during,
The creep curve and average creep curve of each foil gauge can be obtained, using effect is good.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: croop property under a kind of high temperature and high pressure environment
Pilot system, it is characterised in that: including experimental rig and the control device to connect with the experimental rig；The experimental rig packet
Include heating autoclave, the foil gauge being pasted on test specimen, the upper clamping unit for clamping test pieces and lower clamping unit, for band
Move the first lifting device that the upper clamping unit moves up and down and second for driving the lower clamping unit up and down motion
Lifting device；The heating autoclave lower kettle that includes upper kettle and mutually fastened with the upper kettle, the upper kettle and
Lower kettle offers the autoclave body of through-hole by top and the flexible part being arranged at the lead to the hole site forms, on the flexible part
Test through-hole compatible with the test specimen is offered, the upper kettle and lower kettle are double-layer hollow structure, the upper kettle
It is provided with heating component in the hollow cavity of body and lower kettle, pressurization lid and plus matter lid are provided on the upper kettle；The control
Device processed includes controller, the timing module to connect with the controller and the signal processing mould to connect with the foil gauge
Block, the input of the controller are terminated with input module, feedback module, the temperature sensing for detecting heating pressurization temperature in the kettle
Device, the upper ranging mould for detecting the pressure sensor of pressure in heating autoclave, being displaced for detecting the upper clamping unit
Block and the lower range finder module being displaced for detecting the lower clamping unit, the output of the controller are terminated with reminding module, add
Hot component, pressure-applying unit, upper drive module, lower drive module and display module, the upper drive module and lower drive module
Output end connects with feedback module.
Croop property experimental rig under a kind of above-mentioned high temperature and high pressure environment, it is characterised in that: first lifting device
Including upper bed-plate and top shoe, second lifting device includes lower bottom base and sliding block, between the lower bottom base and upper bed-plate
It is provided with the first sliding rail and the second sliding rail, the top shoe and sliding block are slidably connected with the first sliding rail, the second sliding rail respectively, institute
Lower drive module setting is stated to connect on lower bottom base and with sliding block, the upper drive module setting on upper bed-plate and with upper cunning
Block connects, and the lower clamping unit is fixedly connected with sliding block, and the upper clamping unit is arranged on top shoe.
Croop property experimental rig under a kind of above-mentioned high temperature and high pressure environment, it is characterised in that: the top shoe and upper folder
It holds and is provided with connecting rod between unit, the connecting rod is fixedly connected with upper clamping unit, and the top shoe and connecting rod are hinged.
Croop property experimental rig under a kind of above-mentioned high temperature and high pressure environment, it is characterised in that: the upper bed-plate and upper cunning
Between block, balancing pole is respectively connected between lower bottom base and sliding block, the balancing pole is telescopic rod.
Croop property experimental rig under a kind of above-mentioned high temperature and high pressure environment, it is characterised in that: the quantity of the foil gauge
To be multiple, each foil gauge connects with signal processing module respectively, and the control device further includes mean value computation module and difference
Computing module, the output end of the signal processing module are defeated with the input terminal of mean value computation module and difference calculating module respectively
Enter end to connect, the output end of the mean value computation module connects with difference calculating module, the output end of the difference calculating module
Connect with the input terminal of controller.
A kind of simple, the convenient croop property test of realization method that the present invention also provides method and steps, feature exist
In, method includes the following steps:
Step 1: choosing tensile sample: choosing tensile sample according to ASME standard；
Step 2: sample is stretched at permanent load: stretching time upper limit value is set by input module, using upper folder
The both ends for holding unit and lower clamping unit difference clamping test pieces apply the diameter of axle to test specimen using upper drive module and lower drive module
To load, rate of extension is 0.005~0.01mm/min, and stretching time is not less than 500h；
Step 3: setting high temperature and pressure test environment: by the both ends of test specimen respectively from upper clamping unit and lower clamping unit
On remove, paste multiple foil gauges in the different parts of test specimen respectively, test specimen be put into heating autoclave, test specimen stretches out the examination
It tests through-hole and is cooperatively connected with the sealing ring, the both ends of upper clamping unit and lower clamping unit difference clamping test pieces, by defeated
Enter module set temperature threshold value and pressure threshold, heating component adds heating autoclave heating, pressure-applying unit to heating autoclave
Pressure, until reaching temperature threshold and pressure threshold；
Step 4: carrying out croop property test:
Step 401 sets creep time upper limit value and stress difference upper limit value by input module, using upper drive module
Axis radial load is applied to test specimen with lower drive module, rate of extension is 0.005~0.01mm/min, and stretching time is not less than
500h, obtains stress test numerical value by foil gauge, obtains creep time test number by timing module, and be transferred to controller；
Step 402, mean value computation module calculate the average value for the stress test numerical value that multiple foil gauges obtain, and difference calculates
Module calculates the difference between the obtained stress test numerical value of each foil gauge and average value, and controller is according to stress test numerical value
The creep curve of each foil gauge is obtained, average creep curve is obtained according to the average value of stress test numerical value, controller is to difference
Value and stress difference upper limit value are compared, if difference is less than stress difference upper limit value, is entered step 403, are otherwise entered step
404；
Step 403, controller 1 are compared creep time test number and creep time upper limit value, work as creep time
Test number is greater than or equal to creep time upper limit value, off-test, otherwise return step 402；
Step 404, reminding module alarm.
Above-mentioned method, it is characterised in that: further include by adding matter lid that test is added into heating autoclave in step 3
Medium.
Compared with the prior art, the present invention has the following advantages:
1, simple structure and reasonable design of the invention is realized and easy to use and operate.
2, in the present invention, upper kettle and lower kettle all have flexible part, and examination compatible with test specimen is offered on flexible part
Through-hole is tested, tests in through-hole and is provided with sealing ring, when deformation occurs under external force for test specimen, test specimen band dynamic seal ring occurs
Displacement, due to flexible part soft flexible, flexible part is under the external force being transmitted to by sealing ring, by natural torsion
State is straightened, therefore relative displacement does not occur between sealing ring and test specimen, and frictional force is not generated between sealing ring and test specimen, keeps away
Exempt from the influence to test stress, improves measurement accuracy.
3, the present invention has heating component and pressurization lid using heating autoclave, heating autoclave, can provide test specimen high
Warm high pressure croop property experimental enviroment.
4, the present invention can meet high temperature pressure corrosion environment by adding matter lid that test(ing) medium is added into heating autoclave
Experimental condition, applicability are good.
5, the present invention is during croop property test, in real time to the stress test numerical value of multiple foil gauges and average value it
Between difference calculated, when difference is greater than or equal to stress difference upper limit value, that is, think that tension on test specimen is uneven, by mentioning
Module of waking up reminds testing crew to carry out test check.
6, for the present invention during croop property test, controller is each according to receiving during croop property test
The stress test numerical value of foil gauge obtains the creep curve of each foil gauge, is answered according to what is received during croop property test
The average value of power test number obtains average creep curve, and is shown by display module, and staff's observation is facilitated to make
With.
In conclusion the present invention can provide high temperature and pressure croop property experimental enviroment to test specimen using heating autoclave, on
Autoclave body and lower kettle all have flexible part, and flexible part can follow the displacement of test specimen, therefore do not generate and rub between sealing ring and test specimen
Power is wiped, the influence to test stress is avoided, improves measurement accuracy, during croop property test, each answer can be obtained
Become the creep curve and average creep curve of piece, using effect is good.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of present invention heating autoclave.
Fig. 3 is schematic block circuit diagram of the invention.
Fig. 4 is flow chart of the method for the present invention.
Description of symbols:
1-controller；2-temperature sensors；3-input modules；
4-pressure sensors；5-foil gauges；6-signal processing modules；
7-mean value computation modules；8-difference calculating modules；9-heating components；
10-pressure-applying units；11-display modules；12-lower bottom bases；
13-the first sliding rail；14-sliding blocks；15-top shoes；
16-the second sliding rail；17-connecting rods；18-upper clamping units；
19-lower clamping units；20-lower drive modules；21-heating autoclaves；
22-test specimens；23-upper drive modules；24-upper bed-plates；
211-lower kettles；212-upper kettles；213-pressurization lids；
214-add matter lid；215-flexible parts, 25-timing modules；
26-reminding modules；27-balancing poles, 28-feedback modules.
Specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes experimental rig and the control device that connects with the experimental rig；
The experimental rig includes heating autoclave 21, the foil gauge 5 being pasted on test specimen 22, the upper clamping list for clamping test pieces 22
Member 18 and lower clamping unit 19, the first lifting device for driving the upper clamping unit 18 to move up and down and for driving
State the second lifting device that lower clamping unit 19 moves up and down；The heating autoclave 21 include upper kettle 212 and with it is described on
The lower kettle 211 that autoclave body 212 mutually fastens, the upper kettle 212 and lower kettle 211 by top offer through-hole autoclave body and
The flexible part 215 at the lead to the hole site is arranged in form, is offered on the flexible part 215 compatible with the test specimen 22
Through-hole is tested, the upper kettle 212 and lower kettle 211 are double-layer hollow structure, the upper kettle 212 and lower kettle 211
It is provided with heating component 9 in hollow cavity, pressurization lid 213 and plus matter lid 214 are provided on the upper kettle 212；The control
Device includes controller 1, the timing module 25 to connect with the controller 1 and the signal processing to connect with the foil gauge 5
Module 6, the input of the controller 1 are terminated with input module 3, feedback module 28, for detecting temperature in heating autoclave 21
Temperature sensor 2, for detect heating autoclave 21 in pressure pressure sensor 4, for detecting the upper clamping unit
The upper range finder module 25 of 18 displacements and the lower range finder module 26 being displaced for detecting the lower clamping unit 19, the controller 1
Output be terminated with reminding module 26, heating component 9, pressure-applying unit 10, upper drive module 23, lower drive module 20 and display mould
The output end of block 11, the upper drive module 23 and lower drive module 20 connects with feedback module 28.
In actual use, add the through-hole for offering on Jie's lid 214 and passing through for the data line connecting with foil gauge 5.
In the present embodiment, first lifting device includes upper bed-plate 24 and top shoe 15, the second lifting device packet
Lower bottom base 12 and sliding block 14 are included, the first sliding rail 13 and the second sliding rail 16 are provided between the lower bottom base 12 and upper bed-plate 24,
The top shoe 15 and sliding block 14 are slidably connected with the first sliding rail 13, the second sliding rail 16 respectively, and the lower drive module 20 is set
Set on lower bottom base 12 and connect with sliding block 14, the upper drive module 23 be arranged on upper bed-plate 24 and with 15 phase of top shoe
It connects, the lower clamping unit 19 is fixedly connected with sliding block 14, and the upper clamping unit 18 is arranged on top shoe 15.
In actual use, upper kettle 212 and lower kettle 211 are opened, test specimen 22 is passed through into test through-hole, then by upper kettle
212 and lower kettle 211 fasten, by upper clamping unit 18 and lower clamping unit 19 clamping stretch out test through-hole test specimen 22 two
End, controller 1 drive the first lifting device and/or the second lifting device, and the first lifting device drives upper clamping unit 18 along the
The movement of the length direction of one sliding rail 13 and the second sliding rail 16, the second lifting device drive lower clamping unit 19 along 13 He of the first sliding rail
The length direction of second sliding rail 16 moves, to provide pulling force to test specimen 22.
When deformation occurs for upper drive module 23 and/or the drive of lower drive module 20 test specimen 22, feedback module 28 is received
The working signal of upper drive module 23 and/or lower drive module 20, and it is transferred to controller 1, controller 1 issues control signal and gives
Timing module 25,25 timing of timing module, when the timing duration of timing module 25 is set with the timing inputted by input module 3
When being worth equal, controller 1 stops the first lifting device of driving and/or the second lifting device, off-test.
In actual use, upper kettle 212 and lower kettle 211 are semicircular arc autoclave body, the upper kettle 212 and lower kettle
211 all have flexible part 215, and test through-hole compatible with the test specimen 22 is offered on flexible part 215, test and set in through-hole
It is equipped with sealing ring.When deformation occurs under external force for test specimen 22, test specimen 22 is subjected to displacement with dynamic seal ring, due to flexible part
215 soft flexibles, so flexible part 215 is under by the external force being transmitted to by sealing ring, by natural torsion state
Be straightened, i.e., flexible part 215 follows test specimen 22 to move, therefore relative displacement does not occur between sealing ring and test specimen 22, seal with
Frictional force will not be generated between test specimen 22, do not influence the stress test of test specimen 22 as a result, and will not influence the sealing of sealing ring
Effect, using effect are good.
In actual use, 3 input temp setting value of input module, pressure set points and timing setting value can be passed through.
Temperature sensor 2 is used to detect the temperature in heating autoclave 21, and collected temperature is transferred to controller
1, the temperature heated in autoclave 21 collected to temperature sensor 2 of controller 1 and desired temperature compare, and work as temperature
Temperature in the collected heating autoclave 21 of sensor 2 is less than desired temperature, and controller 1 drives heating component 9 to work, adds
Hot component 9 is begun to warm up, when the temperature in the collected heating autoclave 21 of temperature sensor 2 is greater than desired temperature, heating
Component 9 stops heating.
Pressure sensor 4 is used to detect the pressure in heating autoclave 21, and by collected pressure transmission to controller
1, the pressure heated in autoclave 21 collected to pressure sensor 4 of controller 1 and pressure set points compare, and work as pressure
Pressure in the collected heating autoclave 21 of sensor 4 is less than pressure set points, and controller 1 drives pressure-applying unit 10 to work,
Pressure-applying unit 10 starts to pressurize to heating autoclave 21, when the pressure in the collected heating autoclave 21 of pressure sensor 4 is big
In pressure set points, pressure-applying unit 10 stops pressurization.
In the present embodiment, the quantity of the foil gauge 5 be it is multiple, each foil gauge 5 respectively with 6 phase of signal processing module
It connects, the control device further includes mean value computation module 7 and difference calculating module 8, the output end point of the signal processing module 6
Do not connect with the input terminal of the input terminal of mean value computation module 7 and difference calculating module 8, the output of the mean value computation module 7
End connects with difference calculating module 8, and the output end of the difference calculating module 8 connects with the input terminal of controller 1.
In actual use, controller 1 drives upper drive module 23, lower drive module 20 or drives upper drive module simultaneously
23 and lower drive module 20, upper drive module 23 drives upper clamping unit 18 to move, and lower drive module 20 drives lower clamping unit
19 movements, to provide external force to test specimen 22.It is corresponding that foil gauge 5 on test specimen 22 through signal processing module 6 obtains test specimen 22
The detection tension value of position, and will test tension value and be transferred to mean value computation module 7 and difference calculating module 8, mean value meter respectively
It calculates module 7 and mean value tension value is calculated according to the detection tension value of obtained each foil gauge 5, and mean value tension value is transmitted
To difference calculating module 8；Detection tension value and mean value computation module 7 of the difference calculating module 8 to each foil gauge 5 received
The mean value tension value being calculated carries out difference calculating, obtains tension difference value, and tension difference value is transferred to controller 1.Measurement
In the process, controller 1 will test tension value, the mean value tension value that mean value computation module 7 is calculated and difference calculating module 8 and count
Obtained tension difference value is sent to display module 11, and staff is facilitated to understand content of the test in time.
In the present embodiment, connecting rod 17, the connecting rod 17 are provided between the top shoe 15 and upper clamping unit 18
It is fixedly connected with upper clamping unit 18, the top shoe 15 and connecting rod 17 are hinged.In actual use, due to top shoe 15 and even
Extension bar 17 is hinged, therefore upper clamping unit 18 position-movable, using flexible, facilitates clamping.
In the present embodiment, it is respectively connected between the upper bed-plate 24 and top shoe 15, between lower bottom base 12 and sliding block 14
Balancing pole 27, the balancing pole 27 are telescopic rod.In actual use, at least provided with two between upper bed-plate 24 and top shoe 15
Balancing pole 27, at least provided with two balancing poles 27 between lower bottom base 12 and sliding block 14, the setting of balancing pole 27 avoids cunning
14 disequilibrium of block 15 or sliding block.
In the present embodiment, connector and sealing ring are provided between the upper kettle 212 and lower kettle 211.Actual use
When, connector is buckle.
In the present embodiment, the pressure-applying unit 10 is force (forcing) pump.
In the present embodiment, the heating component 9 is resistive heater.
In the present embodiment, the upper drive module 23 and lower drive module 20 are pneumatic actuation module.
In the present embodiment, the flexible part 215 is made of fluorubber.In actual use, fluorubber is using energy high temperature resistant 250
DEG C or more, high pressure 100MPa, while again can water vapor resistance tetrapropanate fluorine rubber.
As shown in figure 4, the invention also includes croop property test method under a kind of high temperature and high pressure environment, this method include with
Lower step:
Step 1: choosing tensile sample: choosing tensile sample according to ASME standard.In actual use, test specimen 22 includes mark
Away from section part, it is connected to the transition at gauge length section part both ends, and the retained part to connect respectively with transition, clamping
Partial length is not less than 2/3rds of upper clamping unit 18 or the effective clamping length of lower clamping unit 19, and gauge length section part is
Cross-sectional diameter is not less than the cylindrical body of 5mm.
Step 2: sample is stretched at permanent load: stretching time upper limit value is set by input module 3, in use
The both ends of clamping unit 18 and lower clamping unit 19 difference clamping test pieces 22, it is right using upper drive module 23 and lower drive module 20
Test specimen 22 applies axis radial load, and rate of extension is 0.005~0.01mm/min, and stretching time is not less than 500h.Actual use
When, load is equal to the cross-sectional area and stress product of 22 gauge length section part of sample.This stage test specimen 22 undergoes elastic stage and modeling
Sexual stage, rate of extension 0.01mm/min.
Step 3: setting high temperature and pressure test environment: by the both ends of test specimen 22 respectively from upper clamping unit 18 and lower clamping
It is removed on unit 19, pastes multiple foil gauges 5 in the different parts of test specimen 22 respectively, test specimen 22 is put into heating autoclave 21,
Test specimen 22 stretches out the test through-hole and is cooperatively connected with the sealing ring, and upper clamping unit 18 and lower clamping unit 19 are pressed from both sides respectively
The both ends for holding test specimen 22, by 3 set temperature threshold value of input module and pressure threshold, 9 pairs of heating autoclaves 21 of heating component add
Heat, 10 pairs of heating autoclave 21 pressurizations of pressure-applying unit, until reaching temperature threshold and pressure threshold.In actual use, temperature threshold
Value is not more than 360 DEG C, and pressure threshold is not more than 18MPa, can be also situated between by adding matter lid 214 that test is added into heating autoclave 21
Matter, meets the experimental condition of high temperature pressure corrosion environment, and applicability is good.
Step 4: carrying out croop property test:
Step 401 sets creep time upper limit value and stress difference upper limit value by input module 3, using upper driving mould
Block 23 and lower drive module 20 apply axis radial load to test specimen 22, and rate of extension is 0.005~0.01mm/min, stretching time
Not less than 500h, stress test numerical value is obtained by foil gauge 5, creep time test number is obtained by timing module 25, and transmit
To controller 1.In actual use, when the termination condition of croop property test is that creep time test number is greater than or equal to creep
Between upper limit value.
Step 402, mean value computation module 7 calculate the average value for the stress test numerical value that multiple foil gauges 5 obtain, difference meter
It calculates module 8 and calculates the difference between each obtained stress test numerical value of foil gauge 5 and average value, controller 1 is surveyed according to stress
Examination numerical value obtains the creep curve of each foil gauge 5, obtains average creep curve according to the average value of stress test numerical value, controls
Device 1 is compared difference and stress difference upper limit value, if difference be less than stress difference upper limit value, enter step 403, otherwise into
Enter step 404.In actual use, during croop property test, in real time to the stress test numerical value of multiple foil gauges 5 and averagely
Difference between value is calculated, and when difference is greater than or equal to stress difference upper limit value, that is, thinks that tension on test specimen 22 is uneven,
Therefore 404 are entered step, reminds testing crew to carry out test check by reminding module 26.
Step 403, controller 1 are compared creep time test number and creep time upper limit value, work as creep time
Test number is greater than or equal to creep time upper limit value, off-test, otherwise return step 402.The end of croop property test
Condition is that creep time test number is greater than or equal to creep time upper limit value, during controller 1 is tested according to croop property
The stress test numerical value of each foil gauge 5 received obtains the creep curve of each foil gauge 5, is tested according to croop property
The average value of the stress test numerical value received in journey obtains average creep curve, and is shown by display module 11, side
Just staff, which observes, uses.In actual use, the strain limit of foil gauge 5 is 2%, and strain limit refers to foil gauge 5 most
Big deformation quantity, will be broken more than this 5 internal resistance silk of deformation quantity foil gauge causes to open a way, to can not continue to use, answers
The minimum of change indicates that unit is um/m, and 2% indicates 0.02* (10^6) um/m, i.e. 20000 microstrains.
Step 404, reminding module 26 are alarmed.When difference be greater than or equal to stress difference upper limit value, that is, think on test specimen 22
Tension it is uneven, therefore enter step 404, remind testing crew to carry out test check by reminding module 26.
The above is only the embodiment of the present invention, is not intended to limit the invention in any way, all technologies according to the present invention
Essence any simple modification to the above embodiments, change and equivalent structural changes, still fall within the technology of the present invention side
In the protection scope of case.
Claims (8)
1. croop property pilot system under a kind of high temperature and high pressure environment, it is characterised in that: including experimental rig and with the test
The control device that device connects；The experimental rig includes heating autoclave (21), the foil gauge being pasted on test specimen (22)
(5), for the upper clamping unit (18) and lower clamping unit (19) of clamping test pieces (22), for driving the upper clamping unit
(18) the first lifting device to move up and down and the second lifting device for driving the lower clamping unit (19) to move up and down；
Heating autoclave (21) includes upper kettle (212) and the lower kettle (211) mutually fastened with the upper kettle (212), institute
Upper kettle (212) and lower kettle (211) is stated to offer the autoclave body of through-hole by top and the soft of the lead to the hole site is arranged in
Property portion (215) form, offer the compatible test through-hole with the test specimen (22), the upper kettle on the flexible part (215)
Body (212) and lower kettle (211) are double-layer hollow structure, in the hollow cavity of the upper kettle (212) and lower kettle (211)
It is provided with heating component (9), pressurization lid (213) is provided on the upper kettle (212) and adds matter lid (214)；The control dress
It sets including controller (1), the timing module (25) to connect with the controller (1) and the letter to connect with the foil gauge (5)
Number processing module (6), the input of the controller (1) are terminated with input module (3), feedback module (28), for detecting heating
The temperature sensor (2) of autoclave (21) interior temperature, for detect heat autoclave (21) interior pressure pressure sensor (4),
For detecting the upper range finder module (25) of upper clamping unit (18) displacement and for detecting lower clamping unit (19) position
The lower range finder module (26) moved, the output of the controller (1) are terminated with reminding module (26), heating component (9), pressure-applying unit
(10), upper drive module (23), lower drive module (20) and display module (11), the upper drive module (23) and lower driving mould
The output end of block (20) connects with feedback module (28).
2. croop property experimental rig under a kind of high temperature and high pressure environment described in accordance with the claim 1, it is characterised in that: described
One lifting device includes upper bed-plate (24) and top shoe (15), and second lifting device includes lower bottom base (12) and sliding block
(14), the first sliding rail (13) and the second sliding rail (16), the upper cunning are provided between the lower bottom base (12) and upper bed-plate (24)
Block (15) and sliding block (14) are slidably connected with the first sliding rail (13), the second sliding rail (16) respectively, the lower drive module (20)
Be arranged and connect on lower bottom base (12) and with sliding block (14), the upper drive module (23) be arranged on upper bed-plate (24) and with
Top shoe (15) connects, and the lower clamping unit (19) is fixedly connected with sliding block (14), upper clamping unit (18) setting
On top shoe (15).
3. croop property experimental rig under a kind of high temperature and high pressure environment according to claim 2, it is characterised in that: on described
It is provided between sliding block (15) and upper clamping unit (18) connecting rod (17), the connecting rod (17) and upper clamping unit (18) are solid
Fixed connection, the top shoe (15) and connecting rod (17) are hinged.
4. croop property experimental rig under a kind of high temperature and high pressure environment according to claim 2, it is characterised in that: on described
It is respectively connected with balancing pole (27) between pedestal (24) and top shoe (15), between lower bottom base (12) and sliding block (14), it is described flat
Bar (27) are weighed as telescopic rod.
5. croop property experimental rig under a kind of high temperature and high pressure environment described in accordance with the claim 1, it is characterised in that: described to answer
Become the quantity of piece (5) to be multiple, each foil gauge (5) connects with signal processing module (6) respectively, and the control device further includes
Mean value computation module (7) and difference calculating module (8), the output end of the signal processing module (6) respectively with mean value computation mould
The input terminal of block (7) and the input terminal of difference calculating module (8) connect, the output end and difference of the mean value computation module (7)
Computing module (8) connects, and the output end of the difference calculating module (8) connects with the input terminal of controller (1).
6. a kind of method for carrying out croop property test using pilot system as claimed in claim 5, which is characterized in that this method
The following steps are included:
Step 1: choosing tensile sample: choosing tensile sample according to ASME standard；
Step 2: sample is stretched at permanent load: stretching time upper limit value is set by input module (3), using upper folder
The both ends for holding unit (18) and lower clamping unit (19) difference clamping test pieces (22), using upper drive module (23) and lower driving mould
Block (20) applies axis radial load to test specimen (22), and rate of extension is 0.005~0.01mm/min, and stretching time is not less than
500h；
Step 3: setting high temperature and pressure test environment: by the both ends of test specimen (22) respectively from upper clamping unit (18) and lower clamping
Unit is removed on (19), pastes multiple foil gauges (5) in the different parts of test specimen (22) respectively, and test specimen (22) is put into heating and is added
It presses kettle (21), test specimen (22) stretches out the test through-hole and is cooperatively connected with the sealing ring, upper clamping unit (18) and lower folder
The both ends for holding unit (19) difference clamping test pieces (22), pass through input module (3) set temperature threshold value and pressure threshold, heating group
Part (9) to heating autoclave (21) heating, pressure-applying unit (10) to heating autoclave (21) pressurization, until reach temperature threshold and
Pressure threshold；
Step 4: carrying out croop property test:
Step 401 sets creep time upper limit value and stress difference upper limit value by input module (3), using upper drive module
(23) and lower drive module (20) applies axis radial load to test specimen (22), and rate of extension is 0.005~0.01mm/min, is stretched
Time is not less than 500h, obtains stress test numerical value by foil gauge (5), obtains creep time test number by timing module (25)
Value, and it is transferred to controller (1)；
Step 402, mean value computation module (7) calculate the average value for the stress test numerical value that multiple foil gauges (5) obtain, difference meter
Calculate the difference between each obtained stress test numerical value of foil gauge (5) of module (8) calculating and average value, controller (1) basis
Stress test numerical value obtains the creep curve of each foil gauge (5), obtains average creep according to the average value of stress test numerical value
Curve, controller (1) are compared difference and stress difference upper limit value, if difference is less than stress difference upper limit value, into step
Rapid 403, otherwise enter step 404；
Step 403, controller 1 are compared creep time test number and creep time upper limit value, when creep time is tested
Numerical value is greater than or equal to creep time upper limit value, off-test, otherwise return step 402；
Step 404, reminding module (26) alarm.
7. according to the method for claim 6, it is characterised in that: further include by adding matter lid (214) Xiang Jiare in step 3
Test(ing) medium is added in autoclave (21).
8. according to the method for claim 6, it is characterised in that: temperature threshold is not more than 360 DEG C in step 3, pressure threshold
No more than 18MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811524387.5A CN109443948B (en) | 2018-12-13 | 2018-12-13 | Creep performance test system and test method under high-temperature and high-pressure environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811524387.5A CN109443948B (en) | 2018-12-13 | 2018-12-13 | Creep performance test system and test method under high-temperature and high-pressure environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109443948A true CN109443948A (en) | 2019-03-08 |
| CN109443948B CN109443948B (en) | 2023-04-07 |
Family
ID=65558181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811524387.5A Active CN109443948B (en) | 2018-12-13 | 2018-12-13 | Creep performance test system and test method under high-temperature and high-pressure environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109443948B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189147A (en) * | 2021-04-30 | 2021-07-30 | 中国商用飞机有限责任公司 | Method, system and medium for detecting electrical property of windshield glass |
| CN114252342A (en) * | 2021-12-20 | 2022-03-29 | 南通神龙化纤绳业有限公司 | High-modulus polyethylene fiber constant load creep testing device and method |
| CN117110046A (en) * | 2023-08-28 | 2023-11-24 | 中国人民解放军火箭军工程大学 | Method for testing creep property of viscoelastic material |
| RU2810652C1 (en) * | 2023-02-16 | 2023-12-28 | Общество с ограниченной ответственностью "НЕОМАШ" | Tension testing machine and its method of operation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2792412A1 (en) * | 1999-04-14 | 2000-10-20 | Framatome Sa | Test piece mechanical testing in an autoclave to determine axial strain with the test piece and measurement sensors placed within the autoclave and the sensor output fed outside of the autoclave to give improved accuracy |
| CN106153472A (en) * | 2016-06-17 | 2016-11-23 | 华北电力大学 | A kind of realize multi-axial creep pilot system and the method that intrinsic pressure and stretching combinations loads |
| CN106168560A (en) * | 2016-09-19 | 2016-11-30 | 西安科技大学 | Foreign material creep rate assay device under autoclave environment |
| CN106483020A (en) * | 2016-11-30 | 2017-03-08 | 苏州热工研究院有限公司 | High Temperature High Pressure fretting fatigue testing machine |
| CN206554868U (en) * | 2017-02-06 | 2017-10-13 | 辽宁贝斯瑞德石油装备制造有限公司 | A kind of oil well cement high temperature high-pressure curing kettle kettle cover sealing structure |
| CN107290229A (en) * | 2017-06-20 | 2017-10-24 | 西南石油大学 | HTHP erosion-corrosion fatigue test device |
| CN108760486A (en) * | 2018-04-12 | 2018-11-06 | 浙江裕立检测科技有限公司 | Universal testing machine |
-
2018
- 2018-12-13 CN CN201811524387.5A patent/CN109443948B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2792412A1 (en) * | 1999-04-14 | 2000-10-20 | Framatome Sa | Test piece mechanical testing in an autoclave to determine axial strain with the test piece and measurement sensors placed within the autoclave and the sensor output fed outside of the autoclave to give improved accuracy |
| CN106153472A (en) * | 2016-06-17 | 2016-11-23 | 华北电力大学 | A kind of realize multi-axial creep pilot system and the method that intrinsic pressure and stretching combinations loads |
| CN106168560A (en) * | 2016-09-19 | 2016-11-30 | 西安科技大学 | Foreign material creep rate assay device under autoclave environment |
| CN106483020A (en) * | 2016-11-30 | 2017-03-08 | 苏州热工研究院有限公司 | High Temperature High Pressure fretting fatigue testing machine |
| CN206554868U (en) * | 2017-02-06 | 2017-10-13 | 辽宁贝斯瑞德石油装备制造有限公司 | A kind of oil well cement high temperature high-pressure curing kettle kettle cover sealing structure |
| CN107290229A (en) * | 2017-06-20 | 2017-10-24 | 西南石油大学 | HTHP erosion-corrosion fatigue test device |
| CN108760486A (en) * | 2018-04-12 | 2018-11-06 | 浙江裕立检测科技有限公司 | Universal testing machine |
Non-Patent Citations (2)
| Title |
|---|
| 梁浩宇等: "304不锈钢构件的高温蠕变特性分析", 《太原理工大学学报》 * |
| 薛河等: "压水堆一回路环境中304不锈钢的蠕变特性分析", 《西安科技大学学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189147A (en) * | 2021-04-30 | 2021-07-30 | 中国商用飞机有限责任公司 | Method, system and medium for detecting electrical property of windshield glass |
| CN113189147B (en) * | 2021-04-30 | 2024-02-27 | 中国商用飞机有限责任公司 | Windshield glass electrical property detection method, system and medium |
| CN114252342A (en) * | 2021-12-20 | 2022-03-29 | 南通神龙化纤绳业有限公司 | High-modulus polyethylene fiber constant load creep testing device and method |
| RU2810652C1 (en) * | 2023-02-16 | 2023-12-28 | Общество с ограниченной ответственностью "НЕОМАШ" | Tension testing machine and its method of operation |
| CN117110046A (en) * | 2023-08-28 | 2023-11-24 | 中国人民解放军火箭军工程大学 | Method for testing creep property of viscoelastic material |
| CN117110046B (en) * | 2023-08-28 | 2024-05-03 | 中国人民解放军火箭军工程大学 | Method for testing creep property of viscoelastic material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109443948B (en) | 2023-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109443948A (en) | Croop property pilot system and test method under a kind of high temperature and high pressure environment | |
| Guo et al. | Tension testing of silicone rubber at high strain rates | |
| JP6142074B2 (en) | Fatigue testing equipment | |
| CN201555769U (en) | Tension and compression stress strain detecting device | |
| CN103323391B (en) | Double-acting type friction coefficient testing device and method | |
| Samal et al. | Estimation of fracture behavior of thin walled nuclear reactor fuel pins using Pin-Loading-Tension (PLT) test | |
| CN106872284A (en) | Device and method for detecting rock toughness under simulation stratum condition | |
| CN204964302U (en) | Flexible material compression stress and strain digital display formula testing arrangement | |
| CN202770717U (en) | Strain control device for high-temperature tension test of foil strips | |
| CN202974770U (en) | Young modulus measurer | |
| JP4859224B2 (en) | Compression test method, compression tester, and program | |
| CN104614162B (en) | Bolt connecting piece deformation and friction simulation test device | |
| RU2012108467A (en) | METHOD FOR DETERMINING MECHANICAL CHARACTERISTICS OF SEWING MATERIALS AND INSTALLATION FOR ITS IMPLEMENTATION | |
| CN106840914B (en) | Monofilament bending performance testing device and method | |
| CN205749126U (en) | Extensometer method measure apparatus of youngs modulus | |
| CN114199684A (en) | Experimental device for be used for demarcating pipeline stress state under external load effect | |
| RU2653186C1 (en) | Method of determining poisson ratio of sealed thin-walled polymer tube material | |
| CN113155357A (en) | Ultrasonic measurement calibration experiment table and method for axial tensile stress of large bolt | |
| CN106289673B (en) | Deep water overpressure resistant meausring apparatus | |
| CN108333104B (en) | Testing device and method for testing surface friction force of flexible material | |
| Seng | Inverse modelling of material parameters for rubber-like material: create a new methodology of predicting the material parameters using indentation bending test | |
| RU148677U1 (en) | EDUCATIONAL INSTRUMENT FOR DEMONSTRATION OF CREEP OF POLYMERIC COMPOSITE MATERIALS | |
| CN208155755U (en) | A kind of high temperature fatigue testing machine strain gauge means | |
| RU156561U1 (en) | DEVICE FOR MEASURING SUPPORT REACTIONS | |
| CN214407873U (en) | Ultrasonic measurement calibration experiment table for axial tensile stress of large bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |