CN103207141A - Hydrogen sulfide resistant stress corrosion cracking and bending test device - Google Patents
Hydrogen sulfide resistant stress corrosion cracking and bending test device Download PDFInfo
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- CN103207141A CN103207141A CN2013100931437A CN201310093143A CN103207141A CN 103207141 A CN103207141 A CN 103207141A CN 2013100931437 A CN2013100931437 A CN 2013100931437A CN 201310093143 A CN201310093143 A CN 201310093143A CN 103207141 A CN103207141 A CN 103207141A
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Abstract
A hydrogen sulfide resistant stress corrosion cracking and bending test device comprises a rectangular shell (1), a test sample support (4) is disposed at the bottom of the rectangular shell (1), a cover plate (3) is fixed at the upper end of the rectangular shell (1) through a bolt pair (5), a sealing washer (2) is arranged between the cover plate (3) and the rectangular shell (1) to form a sealed test container. The test sample support (4) is of rectangular frame structure, the front and rear ends of the test support (4) are provided with symmetric grooves (10), test sample bending fixtures (11) can be inset in the grooves (10), and a gas inlet pipe (6) and a gas exhaust pipe (7) are inserted at two diagonal corners of the cover plate (3). The hydrogen sulfide resistant stress corrosion cracking and bending test device can conveniently and effectively carry out hydrogen sulfide resistant stress corrosion cracking test, and detect, evaluate and accurately analyze hydrogen sulfide resistant stress corrosion cracking capability, and variation trend of applied stress along with time is given out under a certain corrosive environment.
Description
Technical field
The present invention relates to a kind of anti-H 2 S stress corrosion cracking (SSCC) bend test device, mainly for detection of the ability of evaluating material anti-H 2 S stress corrosion cracking in standard solution or simulated condition condition, also can be used for hydrogen induced cracking (HIC) test and detect appraisal.
Background technology
Equipment and the pipeline service condition of enterprises such as oil exploitation conveying, refinery mostly are wet environment, and medium contains H
2S, acidic materials are more, and corrosion is to influence equipment and the key factor in piping system reliability and serviceable life, and wherein H 2 S stress corrosion is one of important form of pipe line steel corrosion.The H 2 S stress corrosion cracking is a kind of hydrogen stress cracking form, the hydrogen atom that is produced by the sulfide corrosion that is adsorbed on the metal surface is caused, belong to a kind of low stress brittle rupture, the plastic yield of macroscopic view seldom appears in metal before fracture, therefore tend to cause the catastrophic failure of absence of aura, bring serious threat to safety in production.The H 2 S stress corrosion cracking is relevant with the size of stress, the steel grade that intensity is more high more is easy to generate this cracking, crackle is mostly along shell thickness direction expansion, because weld seam provides the possibility of bigger unrelieved stress, so this cracking generally occurs in the welding joint position.
The test method of metal resisting sulfide stress cracking and stress corrosion crack in the hydrogen-sulfide environmental (NACE TM0177-2005), the preparation of curved beam stress corrosion sample and the standard implementation rules of using (ASTM G39-99), the corrosion stress corrosion test second portion of metal and alloy: the testing requirements that the preparation of bend specimen and application standards such as (ISO7539-2) proposes and stipulated steel pipe anti-H 2 S bending stress corrosion cracking, intercepting and the preparation of sample have been stipulated, the mensuration program of test operation and parameters, be used for to estimate and detect pipeline or whether device can cause stress corrosion crack under hydrogen-sulfide environmental, thereby the guarantee foundation of safe reliability is provided under arms for equipment or pipeline.
Summary of the invention
The technical matters that the present invention solves: design a kind of anti-H 2 S stress corrosion cracking bend test device, can make things convenient for, effectively carry out the anti-H 2 S stress corrosion split test, detect to estimate and the accurate anti-H 2 S stress corrosion cracking ability of analysis conduit or equipment, be given under certain corrosion environment loading stress simultaneously along with the variation tendency of time.
Technical solution of the present invention: a kind of anti-H 2 S stress corrosion cracking bend test device, comprise rectangular housing, the bottom of described rectangular housing is placed with sample mount, the upper port of rectangular housing fixedly has cover plate by bolt is secondary, and is provided with the test chamber that packing washer forms a sealing between cover plate and the rectangular housing; The rectangular framed structure of described sample mount and its front and back end have the groove of symmetry, can embed the sample bending fixture in the described groove, and the place, two diagonal angles of described cover plate is fitted with draft tube and gas outlet.
Described sample mount front and back end has equally spaced three pairs of grooves, and each is to embedding a sample bending fixture in the groove.
Be shaped on three equidistant jacks on the described cover plate, and fleximeter is housed on the jack, and make the detection head of fleximeter be positioned at the top at sample bending fixture center.
The range of described fleximeter is 0～1 inch, and precision is 0.001 inch.
The material of described rectangular housing, cover plate is C276 Hastelloy material; The material of sample mount is teflon.
The advantage that the present invention has and effect
1, the present invention can make things convenient for, effectively carry out anti-H 2 S stress corrosion cracking (SSCC) bending test, detect the anti-H 2 S stress corrosion cracking ability of estimating and accurately analyze tubing, sheet material or equipment, reduce other factors to the interference of test, and be given under certain corrosion environment loading stress along with the change curve of time.The present invention simultaneously also can be used for hydrogen induced cracking (HIC) test and detects appraisal.
2, the present invention can estimate and detect tubing, sheet material or the equipment anti-H 2 S stress corrosion cracking ability under standard solution or simulation oil field work condition environment, detects tubing, sheet material or equipment and whether occurs crackle in the standard cure hydrogen solution or under the simulation oil field working condition; The fleximeter that is positioned over specimen surface can be used for the monitoring test sample trend that bending stress changed along with the time under standard cure hydrogen solution or simulation oil field working condition.
Description of drawings
Fig. 1 is structural representation of the present invention, Fig. 2 is rectangular housing structural representation of the present invention, and Fig. 3 is sample mount structural representation of the present invention, and Fig. 4 is covering plate structure synoptic diagram of the present invention, Fig. 5, Fig. 6, Fig. 7 are sample bending fixture structural representation of the present invention, and Fig. 8 uses constitutional diagram for the present invention.
Embodiment
Below in conjunction with accompanying drawing 1--8 a kind of embodiment of the present invention is described.
A kind of anti-H 2 S stress corrosion cracking bend test device, comprise rectangular housing 1, the bottom of described rectangular housing 1 is placed with sample mount 4, the upper port of rectangular housing 1 fixedly has cover plate 3 by bolt secondary 5, and is provided with the test chamber that packing washer 2 forms a sealing between cover plate 3 and the rectangular housing 1; Described sample mount 4 materials are that teflon and front and back end have equally spaced three pairs of grooves 10, and each is used for the stationary curved anchor clamps to can embedding a sample bending fixture 11 in the groove 10, avoid being in contact with one another between the test specimen and cause galvanic corrosion; The sample stress loading that the anchor clamps fluctuation that can reduce to be caused by factors such as external shock in the process of the test simultaneously causes changes.Be shaped on three equidistant jacks 9 on the described cover plate 3, and fleximeter 8 is housed on the jack 9, and the top that makes the detection head of fleximeter 8 be positioned at sample bending fixture 11 centers is close to test specimen, be used for measuring test to the size of test specimen 12 loading stresses.The range of described fleximeter 8 is 0～1 inch, and precision is 0.001 inch.The place, two diagonal angles of described cover plate 3 is fitted with draft tube 6 and gas outlet 7.The material of described rectangular housing 1, cover plate 3 is C276 Hastelloy material; Described sample bending fixture 11 is 2 curved, 3 curved or 4 kinking structures.
Test procedure:
The first step is polished, after the dimensional measurement, registration marking, cleaning-drying, cooling, is required to load according to Fig. 5, Fig. 6, Fig. 7 method according to the test loading stress the code test sample;
In second step, by guide pump testing liquid is imported the housing the inside;
The 3rd step was fixed to the anchor clamps that loaded test specimen on the sample mount, then sample mount was placed into housing bottom, and warranty test solution can submergence sample and anchor clamps;
The 4th step was placed into the housing upper port with packing washer, aims at screw then cover plate is covered and the erection bolt pair, again by the spanner pair that tights a bolt.
The 5th step was connected draft tube with nitrogen cylinder, escape pipe is connected with liquid waste treating apparatus, and testing liquid was carried out deoxygenation 2 hours, and gas flow rate is not less than 100 mL/(and divides every liter of testing liquid); After the deoxygenation, feed H
2S gas, speed should be at least 200 mL/(and divide every liter of testing liquid), the duration is 60 minutes.
In the 6th step, duration of test runs 720 hours in the process of the test, must keep H
2S gas malleation.After the time, measure the pH value of solution value, and in solution, feed N
2Gas is removed the H in the solution more than two hours
2S gas.Remove H
2Device for opening takes out sample behind the S, uses the absolute ethyl alcohol washed samples, and whether observe specimen surface has crackle.After experiment finished, washing test device, assurance device did not totally have spot.
The present invention can carry out anti-H 2 S stress corrosion cracking (SSCC) bending test to the code test sample and detect evaluation under standard solution.Standard detecting method, standard solution and code test sample can be with reference to the regulations of following standard: the corrosion stress corrosion test second portion of the test method of metal resisting sulfide stress cracking and stress corrosion crack in the hydrogen-sulfide environmental (NACE TM0177-2005), the preparation of curved beam stress corrosion sample and the standard implementation rules (ASTM G39-99), metal and the alloy that use: the preparation of bend specimen and application (ISO7539-2).
The present invention can be used as hydrogen induced cracking (HIC) test unit, under standard solution the code test sample is detected evaluation.Standard solution and code test sample can be according to the regulations of following standard: pipeline and pressure apparatus are with the anti-hydrogen induced cracking evaluation method of steel (NACE TM0284-2003).
The present invention can be used for the monitoring test sample trend that bending stress changed along with the time under the standard cure hydrogen solution.The present invention also can be used for estimating under the simulation oil field working condition stress corrosion at pipeline or equipment.
Above-described embodiment is preferred embodiment of the present invention, is not to limit the scope of the present invention, so all equivalent variations of being done with the described content of claim of the present invention all should be included within the claim scope of the present invention.
Claims (5)
1. anti-H 2 S stress corrosion cracking bend test device, comprise rectangular housing (1), it is characterized in that: the bottom of described rectangular housing (1) is placed with sample mount (4), the upper port of rectangular housing (1) fixedly has cover plate (3) by bolt pair (5), and is provided with the test chamber that packing washer (2) forms a sealing between cover plate (3) and the rectangular housing (1); The rectangular framed structure of described sample mount (4) and its front and back end have the groove (10) of symmetry, can embed sample bending fixture (11) in the described groove (10), and the place, two diagonal angles of described cover plate (3) is fitted with draft tube (6) and gas outlet (7).
2. a kind of anti-H 2 S stress corrosion cracking bend test device according to claim 1, it is characterized in that: described sample mount (4) front and back end has equally spaced three pairs of grooves (10), and each is to embedding a sample bending fixture (11) in the groove (10).
3. a kind of anti-H 2 S stress corrosion cracking bend test device according to claim 2, it is characterized in that: be shaped on three equidistant jacks (9) on the described cover plate (3), and fleximeter (8) is housed on the jack (9), and makes the detection head of fleximeter (8) be positioned at the top at sample bending fixture (11) center.
4. a kind of anti-H 2 S stress corrosion cracking bend test device according to claim 3, it is characterized in that: the range of described fleximeter (8) is 0～1 inch, precision is 0.001 inch.
5. according to claim 1 or 2 or 3 or 4 described a kind of anti-H 2 S stress corrosion cracking bend test devices, it is characterized in that: the material of described rectangular housing (1), cover plate (3) is C276 Hastelloy material; The material of sample mount (4) is teflon.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969176A (en) * | 2014-05-21 | 2014-08-06 | 中国船舶重工集团公司第七二五研究所青岛分部 | Method for testing seawater corrosion of low-alloy steel under stress state |
| CN104280331A (en) * | 2013-07-09 | 2015-01-14 | 中国石油天然气集团公司 | Experiment apparatus for constant-load stretching tests in normal-temperature normal-pressure hydrogen sulfide environment |
| CN104898724A (en) * | 2015-06-10 | 2015-09-09 | 中国石油天然气集团公司 | Automatic pH value control device for sulfide stress cracking resistance test, and control method thereof |
| CN105301180A (en) * | 2014-07-25 | 2016-02-03 | 珠海格力电器股份有限公司 | Detection method for shell materials |
| CN105865913A (en) * | 2015-01-22 | 2016-08-17 | 金发科技股份有限公司 | Equipment for testing resistance to environmental stress of plastic at high and low temperature |
| CN105865912A (en) * | 2015-01-22 | 2016-08-17 | 金发科技股份有限公司 | Equipment for testing resistance to environmental stress of plastic |
| CN106970019A (en) * | 2017-05-09 | 2017-07-21 | 中国石油天然气集团公司 | A kind of hydrogen induced cracking (HIC) test fixture |
| CN108489802A (en) * | 2018-03-29 | 2018-09-04 | 武汉钢铁有限公司 | The device and method of metal material hydrogen embrittlement energy is detected under the conditions of dynamic bending |
| RU2672042C1 (en) * | 2017-12-21 | 2018-11-08 | Общество с ограниченной ответственностью "Газпром добыча Астрахань" (ООО "Газпром добыча Астрахань") | Device for investigation for stress-corrosion cracking in hydrogen sulphide containing media |
| CN110230060A (en) * | 2019-06-10 | 2019-09-13 | 超威电源有限公司 | A kind of copper tip plating silver protecting agent and its sulfuration resistant detection device |
| CN112198057A (en) * | 2020-08-31 | 2021-01-08 | 浙江南都电源动力股份有限公司 | Stress evaluation clamping device and stress evaluation method for lead-acid storage battery shell material |
| CN113188985A (en) * | 2021-04-30 | 2021-07-30 | 西南石油大学 | High-flux miniature four-point bending stress corrosion initiation test device and method |
| CN113196034A (en) * | 2018-12-17 | 2021-07-30 | 杰富意钢铁株式会社 | Method and device for evaluating and testing collision performance of metal sheet for automobile body |
| CN113295513A (en) * | 2021-06-09 | 2021-08-24 | 北京科技大学 | Stress corrosion test system and test method for reinforced concrete drainage pipeline |
| CN114371082A (en) * | 2022-01-18 | 2022-04-19 | 西安石油大学 | Stress corrosion cracking monitoring and crack propagation rate evaluation device and test method |
| JPWO2022230255A1 (en) * | 2021-04-30 | 2022-11-03 |
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| CN104280331B (en) * | 2013-07-09 | 2017-04-05 | 中国石油天然气集团公司 | Constant load extension test experimental provision under a kind of normal temperature and pressure hydrogen-sulfide environmental |
| CN104280331A (en) * | 2013-07-09 | 2015-01-14 | 中国石油天然气集团公司 | Experiment apparatus for constant-load stretching tests in normal-temperature normal-pressure hydrogen sulfide environment |
| CN103969176A (en) * | 2014-05-21 | 2014-08-06 | 中国船舶重工集团公司第七二五研究所青岛分部 | Method for testing seawater corrosion of low-alloy steel under stress state |
| CN105301180B (en) * | 2014-07-25 | 2017-11-17 | 珠海格力电器股份有限公司 | Case material detection method |
| CN105301180A (en) * | 2014-07-25 | 2016-02-03 | 珠海格力电器股份有限公司 | Detection method for shell materials |
| CN105865913A (en) * | 2015-01-22 | 2016-08-17 | 金发科技股份有限公司 | Equipment for testing resistance to environmental stress of plastic at high and low temperature |
| CN105865912A (en) * | 2015-01-22 | 2016-08-17 | 金发科技股份有限公司 | Equipment for testing resistance to environmental stress of plastic |
| CN104898724B (en) * | 2015-06-10 | 2017-02-22 | 中国石油天然气集团公司 | Automatic pH value control device for sulfide stress cracking resistance test, and control method thereof |
| CN104898724A (en) * | 2015-06-10 | 2015-09-09 | 中国石油天然气集团公司 | Automatic pH value control device for sulfide stress cracking resistance test, and control method thereof |
| CN106970019A (en) * | 2017-05-09 | 2017-07-21 | 中国石油天然气集团公司 | A kind of hydrogen induced cracking (HIC) test fixture |
| RU2672042C1 (en) * | 2017-12-21 | 2018-11-08 | Общество с ограниченной ответственностью "Газпром добыча Астрахань" (ООО "Газпром добыча Астрахань") | Device for investigation for stress-corrosion cracking in hydrogen sulphide containing media |
| CN108489802A (en) * | 2018-03-29 | 2018-09-04 | 武汉钢铁有限公司 | The device and method of metal material hydrogen embrittlement energy is detected under the conditions of dynamic bending |
| CN108489802B (en) * | 2018-03-29 | 2020-12-29 | 武汉钢铁有限公司 | Device and method for detecting hydrogen embrittlement resistance of metal material under dynamic bending condition |
| CN113196034A (en) * | 2018-12-17 | 2021-07-30 | 杰富意钢铁株式会社 | Method and device for evaluating and testing collision performance of metal sheet for automobile body |
| CN113196034B (en) * | 2018-12-17 | 2024-03-08 | 杰富意钢铁株式会社 | Collision performance evaluation test method and device for metal plate for automobile body |
| CN110230060A (en) * | 2019-06-10 | 2019-09-13 | 超威电源有限公司 | A kind of copper tip plating silver protecting agent and its sulfuration resistant detection device |
| CN110230060B (en) * | 2019-06-10 | 2024-02-27 | 超威电源集团有限公司 | Silver plating protective agent for copper terminal and anti-vulcanization detection device thereof |
| CN112198057A (en) * | 2020-08-31 | 2021-01-08 | 浙江南都电源动力股份有限公司 | Stress evaluation clamping device and stress evaluation method for lead-acid storage battery shell material |
| CN113188985A (en) * | 2021-04-30 | 2021-07-30 | 西南石油大学 | High-flux miniature four-point bending stress corrosion initiation test device and method |
| JPWO2022230255A1 (en) * | 2021-04-30 | 2022-11-03 | ||
| WO2022230255A1 (en) * | 2021-04-30 | 2022-11-03 | Ｊｆｅスチール株式会社 | Method for testing sulfide stress corrosion cracking of steel material |
| JP7347665B2 (en) | 2021-04-30 | 2023-09-20 | Ｊｆｅスチール株式会社 | Sulfide stress corrosion cracking test method for steel materials |
| CN113295513A (en) * | 2021-06-09 | 2021-08-24 | 北京科技大学 | Stress corrosion test system and test method for reinforced concrete drainage pipeline |
| CN114371082A (en) * | 2022-01-18 | 2022-04-19 | 西安石油大学 | Stress corrosion cracking monitoring and crack propagation rate evaluation device and test method |
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Application publication date: 20130717 |