CN109100217A - A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion - Google Patents
A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion Download PDFInfo
- Publication number
- CN109100217A CN109100217A CN201811122205.1A CN201811122205A CN109100217A CN 109100217 A CN109100217 A CN 109100217A CN 201811122205 A CN201811122205 A CN 201811122205A CN 109100217 A CN109100217 A CN 109100217A
- Authority
- CN
- China
- Prior art keywords
- fixture
- stress corrosion
- foil gauge
- test
- loading blocks
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 230000007797 corrosion Effects 0.000 title claims abstract description 28
- 238000005260 corrosion Methods 0.000 title claims abstract description 28
- 239000011888 foil Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 238000005987 sulfurization reaction Methods 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910000856 hastalloy Inorganic materials 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002180 anti-stress Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000010946 fine silver Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- G01N3/02—Details
- G01N3/04—Chucks
-
- 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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0458—Chucks, fixtures, jaws, holders or anvils characterised by their material
-
- 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
- G01N2203/0688—Time or frequency
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)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion, clamp base both sides are provided with the step for placing sample, there are loading blocks in the center upper portion position of two steps, the top of loading blocks is connect by loading screw rod with fixture, the two sides of the fixture are pasted with balance sensor foil gauge, one end of balance sensor foil gauge is pasted on fixture when use, the other end is pasted onto loading blocks, and balance sensor foil gauge is connect by signal wire with the digital recording equipment for recording test data.Sample is broken during test, and imbalance state occur in loading blocks, is transferred to digital recording equipment by balance sensor foil gauge, is realized the accurate recording sample out-of-service time, improves reliably foundation for preferably research H 2 S stress corrosion.
Description
Technical field:
The present invention relates to a kind of H 2 S stress corrosion devices, and in particular to a kind of 4 points of curved examinations of anti-H 2 S stress corrosion
Test fixture.
Background technique:
H 2 S stress corrosion is in tensile stress, H2The cracking occurred under the comprehensive function of S and water, H 2 S stress corrosion
Failure have the characteristics that it is sudden, no-delay and without omen, be to destruction caused by oil-gas pipe material safe operation it is fatal, because
During this sulfide stress corrosion cracking test, it is vital for grasping the fracture failure time.
4 flexure stress corrosion tests of hydrogen sulfide be by one group of loads fixture and sample and meanwhile be soaked in corrosive medium into
Row test, test chamber cannot be opened halfway during test, thus sample occur the fracture failure time can not accurate recording, from
And cause the inaccuracy of test result.To the anti-H 2 S stress corrosion performance of different oil-gas pipe materials can not across comparison, from
And the height of its anti-stress corrosion performance can not be measured.
Application No. is CN201310093143.7, disclose a kind of anti-H 2 S stress corrosion cracking bend test device,
Including rectangular housing, the bottom of rectangular housing is placed with sample mount, and the upper end of rectangular housing is fixed with cover board, and cover board and square
The test chamber that seal washer forms a sealing is provided between shape shell；Sample mount rectangular frame structure and its front and back
End has symmetrical groove, embeddable sample bending fixture in the groove, and two diagonal angles of the cover board are fitted with air inlet pipe
And exhaust pipe, sample bending fixture curved, 3 points of curved or 4 kinking structures for two o'clock.Although the device can detecte evaluation and accurate
Analyze the anti-H 2 S stress corrosion cracking ability of tubing, plate or equipment, but can't the failure of accurate recording sample it is disconnected
Split the time.
Therefore, it is necessary to carry out adaptive improvement to 4 flexure stress corrosion test fixtures of existing hydrogen sulfide, trying it
The accurate recording sample failure fracture time during testing is that the evaluation oil-gas pipe material stress corrosion resistant of more preferable, more acurrate property is tested
Performance provides reliable basis.
Summary of the invention:
To overcome the above disadvantages, the purpose of the present invention is to provide a kind of 4 points of curved test clamps of anti-H 2 S stress corrosion
Tool, the fixture can accurately grasp test during sample fail the case where.
The purpose of the present invention is by the following technical programs to solve: a kind of 4 points of curved tests of anti-H 2 S stress corrosion
Fixture, clamp base both sides are provided with the step for placing sample, and there are loading blocks in the center upper portion position of two steps, load
The top of block is connect by loading screw rod with fixture, and the two sides of the fixture are pasted with balance sensor foil gauge, when use
One end of balance sensor foil gauge is pasted on fixture, and the other end is pasted onto loading blocks, and balance sensor foil gauge passes through
Signal wire is connect with the digital recording equipment for recording test data.
Beneficial effects of the present invention:
(1) sample is broken during test, and imbalance state occur in loading blocks of the present invention, is answered by balance sensor
Become piece and be transferred to digital recording equipment, realize the accurate recording sample out-of-service time, is mentioned for preferably research H 2 S stress corrosion
Highly reliably foundation.
(2) 4 flexure stress corrosion test fixtures of anti-H 2 S of the present invention and loading blocks are Hastelloy, balance sensing
Device foil gauge is the good silver strip of corrosion resistance, effectively improves its service life.
Detailed description of the invention:
Fig. 1 is 4 points of anti-H 2 S stress corrosion curved test fixture schematic diagrames of the present invention.
Fig. 2 is the installation diagram of 4 points of curved test fixtures of anti-H 2 S stress corrosion of the present invention.
Description of symbols: 1 fixture, 1-1 step, 2 loading blocks, 3 load screw rods, 4 balance sensor foil gauges, 5 signals
Line, 6 samples, 7 test buckets, 8 sealing covers, 9 air inlet pipe, 10 exhaust pipes.
Specific embodiment:
The invention will be described in further detail with reference to the accompanying drawing:
As depicted in figs. 1 and 2, a kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion, 1 bottom both sides of fixture are provided with
For placing the step 1-1 of sample 6, there are loading blocks 2 in the center upper portion position of two step 1-1, and the top of loading blocks 2 is by adding
It carries screw rod 3 to connect with fixture 1, the two sides of the fixture 1 are pasted with balance sensor foil gauge 4, balance sensor when use
One end of foil gauge 4 is pasted on fixture 1, and the other end is pasted onto loading blocks 2, and balance sensor foil gauge 4 passes through signal wire 5
It is connect with the digital recording equipment for recording test data.
Before test, sample 6 is placed on the upper of two step 1-1 first, load is applied to sample 6 by load screw rod 3；
Secondly after the completion of loading, balance sensor foil gauge 4 is sticked respectively in the two sides of fixture 1, by the one of balance sensor foil gauge 4
End is pasted on fixture 1, and the other end is pasted onto loading blocks 2；Last 4 connection signal line 5 of balance sensor foil gauge, and will be upper
It states all components to place in test bucket 7, testing liquid is added and is tested.
The top of test bucket 7 of the invention is sealing cover 8, is equipped with air inlet pipe 9 and exhaust pipe 10, signal on sealing cover 8
Line 5 passes through sealing cover 8 and connect with digital recording equipment.When experiment, ventilated by air inlet pipe 9 to test bucket 7, exhaust pipe 10 is discharged
Gas records test period by digital recording equipment, and fracture failure once occurs in sample 6 in experimentation, and loading blocks 2 occur
Imbalance state, signal is reached digital recording equipment, digital recording equipment by signal wire 5 by balance sensor foil gauge 4 at this time
Record unstability time, as sample out-of-service time.
In order to facilitate observation experiment situation, it is transparent organic glass that the present invention, which tests bucket 7,.
Present clip 1 and loading blocks 2 are Hastelloy, and the material of balance sensor foil gauge 4 and signal wire 5 is resistance to
The good fine silver of corrosion.
Claims (2)
1. a kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion, it is characterised in that: fixture (1) bottom both sides, which are provided with, to be used for
The step (1-1) of sample (6) is placed, the center upper portion position of two steps (1-1) has loading blocks (2), the top of loading blocks (2)
It is connect by load screw rod (3) with fixture (1), the two sides of the fixture (1) are pasted with balance sensor foil gauge (4), make
One end of used time balance sensor foil gauge (4) is pasted on fixture (1), and the other end is pasted on loading blocks (2), balance sensing
Device foil gauge (4) is connect by signal wire (5) with the digital recording equipment for recording test data.
2. 4 points of curved test fixtures of a kind of anti-H 2 S stress corrosion according to claim 1, it is characterised in that: sulfuration resistant
4 points of curved test fixtures of hydrogen stress corrosion are placed in test bucket (7), and the top of test bucket (7) is sealing cover (8), sealing
Air inlet pipe (9) and exhaust pipe (10) are installed, signal wire (5) passes through sealing cover (8) and connect with digital recording equipment on lid (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122205.1A CN109100217A (en) | 2018-09-26 | 2018-09-26 | A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122205.1A CN109100217A (en) | 2018-09-26 | 2018-09-26 | A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109100217A true CN109100217A (en) | 2018-12-28 |
Family
ID=64867773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811122205.1A Pending CN109100217A (en) | 2018-09-26 | 2018-09-26 | A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109100217A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231218A (en) * | 2019-07-26 | 2019-09-13 | 西南石油大学 | The constant strain stress corrosion testing device and its test method of a kind of analog scene corrosive environment |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58122445A (en) * | 1982-01-14 | 1983-07-21 | Toshiba Corp | Testing method of stress corrosion cracking |
| SU1200162A1 (en) * | 1984-06-12 | 1985-12-23 | Институт Проблем Прочности Ан Усср | Arrangement for specimen clamping at tensile testing |
| JPS63101711A (en) * | 1986-10-18 | 1988-05-06 | Shigeki Yamazaki | Attitude sensor |
| CN202351128U (en) * | 2011-11-11 | 2012-07-25 | 中国石油大学(北京) | Stress clamp for hydrogen sulfide environmental stress corrosion bending test |
| CN203299062U (en) * | 2013-06-18 | 2013-11-20 | 中国海洋石油总公司 | Four-point bending test device for full-size metal composite tube |
| CN103926146A (en) * | 2014-04-11 | 2014-07-16 | 西南石油大学 | Constant-load stress corrosion testing device of small test sample and testing method thereof |
| CN104483187A (en) * | 2014-12-31 | 2015-04-01 | 大连理工大学 | Mechanical property testing device capable of realizing stretching and bending combined loading in different proportions |
| CN106198198A (en) * | 2016-07-01 | 2016-12-07 | 西南石油大学 | A kind of four-point bending sample holding device for stress corrosion and loading method |
| CN107607394A (en) * | 2017-10-16 | 2018-01-19 | 武汉钢铁有限公司 | 4 angle couplings tool and its loading method for the loading of thin plate high stress |
| CN108553263A (en) * | 2017-12-13 | 2018-09-21 | 深圳市罗伯医疗科技有限公司 | A kind of fluid power assistant robot and its control method |
-
2018
- 2018-09-26 CN CN201811122205.1A patent/CN109100217A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58122445A (en) * | 1982-01-14 | 1983-07-21 | Toshiba Corp | Testing method of stress corrosion cracking |
| SU1200162A1 (en) * | 1984-06-12 | 1985-12-23 | Институт Проблем Прочности Ан Усср | Arrangement for specimen clamping at tensile testing |
| JPS63101711A (en) * | 1986-10-18 | 1988-05-06 | Shigeki Yamazaki | Attitude sensor |
| CN202351128U (en) * | 2011-11-11 | 2012-07-25 | 中国石油大学(北京) | Stress clamp for hydrogen sulfide environmental stress corrosion bending test |
| CN203299062U (en) * | 2013-06-18 | 2013-11-20 | 中国海洋石油总公司 | Four-point bending test device for full-size metal composite tube |
| CN103926146A (en) * | 2014-04-11 | 2014-07-16 | 西南石油大学 | Constant-load stress corrosion testing device of small test sample and testing method thereof |
| CN104483187A (en) * | 2014-12-31 | 2015-04-01 | 大连理工大学 | Mechanical property testing device capable of realizing stretching and bending combined loading in different proportions |
| CN106198198A (en) * | 2016-07-01 | 2016-12-07 | 西南石油大学 | A kind of four-point bending sample holding device for stress corrosion and loading method |
| CN107607394A (en) * | 2017-10-16 | 2018-01-19 | 武汉钢铁有限公司 | 4 angle couplings tool and its loading method for the loading of thin plate high stress |
| CN108553263A (en) * | 2017-12-13 | 2018-09-21 | 深圳市罗伯医疗科技有限公司 | A kind of fluid power assistant robot and its control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231218A (en) * | 2019-07-26 | 2019-09-13 | 西南石油大学 | The constant strain stress corrosion testing device and its test method of a kind of analog scene corrosive environment |
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