CN112834332A - Loading detection method and monitoring system for sulfide stress corrosion uniaxial tensile test - Google Patents
Loading detection method and monitoring system for sulfide stress corrosion uniaxial tensile test Download PDFInfo
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- CN112834332A CN112834332A CN202011590521.9A CN202011590521A CN112834332A CN 112834332 A CN112834332 A CN 112834332A CN 202011590521 A CN202011590521 A CN 202011590521A CN 112834332 A CN112834332 A CN 112834332A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- 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
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- 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
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- 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
- G01N2203/0236—Other environments
- G01N2203/024—Corrosive
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- 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
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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Abstract
The invention discloses a loading detection method and a monitoring system for a sulfide stress corrosion uniaxial tensile test, and relates to the technical field of sulfide stress corrosion detection. The loading detection method and the monitoring system for the sulfide stress corrosion uniaxial tensile test can ensure small positive pressure by continuously and stably introducing hydrogen sulfide, and simultaneously prevent air from entering a container, and timely and accurately detect the change of a sample block body by an electric timer and a microswitch.
Description
Technical Field
The invention relates to the technical field of sulfide stress corrosion detection, in particular to a loading detection method and a monitoring system for a sulfide stress corrosion uniaxial tensile test.
Background
Sulfide stress corrosion is a delayed brittle fracture phenomenon that occurs when metals are subjected to the combined action of the tensile stress of the corrosion box in a sulfide environment (even well below the yield stress). Sulfide stress corrosion failure is generally believed to be caused by hydrogen embrittlement. When hydrogen atoms are cathodically liberated on the metal surface, the hydrogen atoms are inhibited from diffusing into regions of high triaxial tensile stress or certain microstructural structures by the presence of hydrogen sulfide and are trapped in these regions, thereby increasing the brittleness of the metal.
The sulfide stress corrosion uniaxial tensile test is to place a sample in a specific sulfide corrosion medium environment and apply tensile load so as to judge the sulfide stress corrosion resistance of the sample, but the existing test retest process often influences the test due to the fact that air is mixed in a container and cannot accurately control a signal of the test ending, and therefore a loading detection method and a monitoring system of the sulfide stress corrosion uniaxial tensile test are provided.
Disclosure of Invention
The invention mainly aims to provide a loading detection method and a monitoring system for a sulfide stress corrosion uniaxial tensile test, which can effectively solve the problems that air is mixed in the background technology to influence the test and the signal for finishing the test cannot be accurately controlled.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention relates to a loading detection method and a monitoring system for a sulfide stress corrosion uniaxial tensile test, which comprise a sample processing module, a test equipment module, a reagent processing module and a damage detection module, wherein the sample processing module and the reagent processing module are connected with the test equipment module, the test equipment module is connected with the damage detection module, the sample processing module processes a sample and then installs the sample in the test equipment module, the reagent processing module processes a reagent and then installs the reagent in the test equipment module, the test equipment module transmits a reaction result of the sample and the reagent to the damage detection module, and the damage detection module integrates the reaction result and converts the reaction result into sound and image signals for output.
Preferably, the coupon processing module includes a stress ring and a coupon body, the coupon body being mounted inside the stress ring.
Preferably, the test equipment module comprises a load balancing device, a clamp device, a container device and an oxygen removing machine, wherein the load balancing device is a static gravity testing machine or a hydraulic device capable of keeping constant pressure in a hydraulic chamber, the clamp device and the container device are made of inert materials, and the oxygen removing machine is arranged on the side surface of the container device.
Preferably, the reagent processing module includes a dissolution cassette, a heater, and a temperature sensor provided on a side surface of the dissolution cassette.
Preferably, the damage detection module comprises an electric timer, a microswitch, a processor and a memory, wherein the electric timer is electrically connected with the microswitch, the electric timer and the undetermined switch are both electrically connected with the processor, and the memory is electrically connected with the processor.
Preferably, the method comprises the following steps:
the method comprises the following steps: the cleaned coupon body and stress ring are placed into the container, and the necessary sealing means are applied, followed by purging the test container with an inert gas.
Step two: after purging of the test vessel, the test vessel is carefully loaded, not to exceed a given loading level.
Step three: the de-aerated solution was immediately injected into the test vessel and then hydrogen sulfide was introduced at a flow rate of 100-.
Step four: during this period it is necessary to keep the hydrogen sulfide in continuous flow through the container and the outlet trap at the rate of a few bubbles per minute, thus maintaining both the hydrogen sulfide concentration and a small positive pressure, thereby preventing air from entering the container through leaks.
Step five: the time of the breaking of the sample block body is recorded through the microswitch and the electric timer, the stress magnitude of the sample block body is recorded through the stress ring, and the processor processes, analyzes and displays the result.
Preferably, when testing some high alloy corrosion resistant materials, in order to prevent the protective film from being formed again, the sequence of steps is changed into a step one, a step three and a step two.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the reagent is processed by the reagent processing module, the concentration and the temperature of the reagent can be ensured, the sample is processed in a standardized manner by the sample processing module, the standardization of the sample can be realized, the oxygen remover arranged in the test equipment module can process oxygen in the container, the hydrogen sulfide is continuously and stably introduced, the small positive pressure can be ensured, meanwhile, air can be prevented from entering the container through a leak, and the change of the sample block body can be timely and accurately detected by destroying the electric timer and the microswitch arranged in the detection module.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a loading detection method and a monitoring system for a sulfide stress corrosion uniaxial tensile test according to the present invention;
FIG. 2 is a flow chart of a loading detection method and a monitoring system for a sulfide stress corrosion uniaxial tensile test of the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
referring to fig. 1, the present invention relates to a loading detection method and a monitoring system for a sulfide stress corrosion uniaxial tensile test, and the loading detection method and the monitoring system include a sample processing module, a test equipment module, a reagent processing module and a damage detection module, wherein the sample processing module and the reagent processing module are both connected to the test equipment module, the test equipment module is connected to the damage detection module, the sample processing module processes a sample and then installs the sample in the test equipment module, the reagent processing module processes a reagent and then installs the reagent in the test equipment module, the test equipment module transmits a reaction result of the sample and the reagent to the damage detection module, and the damage detection module integrates the reaction result and converts the reaction result into sound and image signals for output.
The sample processing module comprises a stress ring and a sample block body, and the sample block body is installed inside the stress ring.
The test equipment module comprises a constant load device, a clamp device, a container device and an oxygen removing machine, wherein the constant load device is a static gravity testing machine or a hydraulic device capable of keeping constant pressure in a hydraulic chamber, the clamp device and the container device are made of inert materials, and the oxygen removing machine is arranged on the side surface of the container device.
Wherein, reagent processing module includes dissolves box, heater and temperature sensor, and temperature sensor sets up and dissolves box side surface.
The damage detection module comprises an electric timer, a microswitch, a processor and a memory, wherein the electric timer is electrically connected with the microswitch, the electric timer and the undetermined switch are both electrically connected with the processor, and the memory is electrically connected with the processor.
Example two:
the loading detection method of the sulfide stress corrosion uniaxial tensile test comprises the following steps:
the method comprises the following steps: the cleaned coupon body and stress ring are placed into the container, and the necessary sealing means are applied, followed by purging the test container with an inert gas.
Step two: after purging of the test vessel, the test vessel is carefully loaded, not to exceed a given loading level.
Step three: the de-aerated solution was immediately injected into the test vessel and then hydrogen sulfide was introduced at a flow rate of 100-.
Step four: during this period it is necessary to keep the hydrogen sulfide in continuous flow through the container and the outlet trap at the rate of a few bubbles per minute, thus maintaining both the hydrogen sulfide concentration and a small positive pressure, thereby preventing air from entering the container through leaks.
Step five: the time of the breaking of the sample block body is recorded through the microswitch and the electric timer, the stress magnitude of the sample block body is recorded through the stress ring, and the processor processes, analyzes and displays the result.
In particular, when some high-alloy corrosion-resistant materials are tested, in order to prevent the protective film from being formed again, the sequence of steps needs to be changed into a first step, a third step and a second step.
Example three:
referring to fig. 1-2, the loading detection method and monitoring system for the sulfide stress corrosion uniaxial tensile test of the present invention includes an electric timer model including model 415, and a microswitch model including model D2 FC-F-7N.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A loading detection method and a monitoring system for a sulfide stress corrosion uniaxial tensile test comprise a sample processing module, a test equipment module, a reagent processing module and a damage detection module, and are characterized in that:
the test device comprises a test device module, a sample processing module, a reagent processing module, a damage detection module and a control module, wherein the sample processing module and the reagent processing module are both connected with the test device module, the test device module is connected with the damage detection module, the sample processing module processes a sample and then installs the sample in the test device module, the reagent processing module processes the reagent and then installs the reagent in the test device module, the test device module transmits a reaction result of the sample and the reagent to the damage detection module, and the damage detection module integrates the reaction result and converts the reaction result into sound and image signal output.
2. The loading detection method and monitoring system for the sulfide stress corrosion uniaxial tensile test according to claim 1, wherein the loading detection method comprises the following steps: the sample processing module comprises a stress ring and a sample block body, and the sample block body is arranged in the stress ring.
3. The loading detection method and monitoring system for the sulfide stress corrosion uniaxial tensile test according to claim 1, wherein the loading detection method comprises the following steps: the test equipment module comprises a constant load device, a clamp device, a container device and an oxygen removing machine, wherein the constant load device is a static gravity testing machine or a hydraulic device capable of keeping constant pressure in a hydraulic chamber, the clamp device and the container device are made of inert materials, and the oxygen removing machine is arranged on the side surface of the container device.
4. The loading detection method and monitoring system for the sulfide stress corrosion uniaxial tensile test according to claim 1, wherein the loading detection method comprises the following steps: the reagent processing module comprises a dissolving box, a heater and a temperature sensor, wherein the temperature sensor is arranged on the side surface of the dissolving box.
5. The loading detection method and monitoring system for the sulfide stress corrosion uniaxial tensile test according to claim 1, wherein the loading detection method comprises the following steps: the damage detection module comprises an electric timer, a microswitch, a processor and a memory, wherein the electric timer is electrically connected with the microswitch, the electric timer and the undetermined switch are electrically connected with the processor, and the memory is electrically connected with the processor.
6. The method for detecting and monitoring the loading of the uniaxial tension test of sulfide stress corrosion according to any one of claims 1 to 5, comprising the following steps:
the method comprises the following steps: the cleaned coupon body and stress ring are placed into the container, and the necessary sealing means are applied, followed by purging the test container with an inert gas.
Step two: after purging of the test vessel, the test vessel is carefully loaded, not to exceed a given loading level.
Step three: the de-aerated solution was immediately injected into the test vessel and then hydrogen sulfide was introduced at a flow rate of 100-.
Step four: during this period it is necessary to keep the hydrogen sulfide in continuous flow through the container and the outlet trap at the rate of a few bubbles per minute, thus maintaining both the hydrogen sulfide concentration and a small positive pressure, thereby preventing air from entering the container through leaks.
Step five: the time of the breaking of the sample block body is recorded through the microswitch and the electric timer, the stress magnitude of the sample block body is recorded through the stress ring, and the processor processes, analyzes and displays the result.
7. The control method of the temperature regulation system for the empty kiln according to claim 6, wherein in the test of some high-alloy corrosion-resistant materials, in order to prevent the re-formation of the protective film, it is necessary to change the sequence of steps to step one, step three and step two.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011590521.9A CN112834332A (en) | 2020-12-29 | 2020-12-29 | Loading detection method and monitoring system for sulfide stress corrosion uniaxial tensile test |
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| CN202011590521.9A CN112834332A (en) | 2020-12-29 | 2020-12-29 | Loading detection method and monitoring system for sulfide stress corrosion uniaxial tensile test |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988879A (en) * | 2009-08-04 | 2011-03-23 | 上海海隆石油管材研究所 | Sulphide stress corrosion uniaxial tensile test loading detection method and monitoring system thereof |
| CN103868811A (en) * | 2014-03-13 | 2014-06-18 | 上海海隆石油钻具有限公司 | Hydrogen sulfide concentration control device for sulfide stress corrosion uniaxial tensile test |
| 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 |
| CN203758889U (en) * | 2014-01-21 | 2014-08-06 | 中国科学院金属研究所 | Device applied to environment corrosion split test in wet hydrogen sulfide environment |
| CN104697873A (en) * | 2015-03-06 | 2015-06-10 | 合肥通用机械研究院 | Sulfide stress corrosion cracking testing apparatus |
| CN104792689A (en) * | 2014-01-21 | 2015-07-22 | 中国科学院金属研究所 | Apparatus for environment corrosion cracking test in wet hydrogen sulfide environment |
| CN105954179A (en) * | 2016-04-25 | 2016-09-21 | 中国石油天然气集团公司 | Test method for measuring metallic material elemental sulfur stress corrosion cracking sensitivity |
| CN106442136A (en) * | 2016-10-18 | 2017-02-22 | 北京科技大学 | Device for testing stress corrosion behavior of metal material under fluid high pressure |
| CN109443892A (en) * | 2018-09-26 | 2019-03-08 | 上海海隆石油管材研究所 | The method of Fast Evaluation oil well pipe resisting sulfide stress corrosion cracking performance |
| CN111443029A (en) * | 2020-03-23 | 2020-07-24 | 中国石油天然气集团有限公司 | Simulation device and simulation method for hydrogen sulfide corrosion of pipe |
-
2020
- 2020-12-29 CN CN202011590521.9A patent/CN112834332A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988879A (en) * | 2009-08-04 | 2011-03-23 | 上海海隆石油管材研究所 | Sulphide stress corrosion uniaxial tensile test loading detection method and monitoring system thereof |
| CN203758889U (en) * | 2014-01-21 | 2014-08-06 | 中国科学院金属研究所 | Device applied to environment corrosion split test in wet hydrogen sulfide environment |
| CN104792689A (en) * | 2014-01-21 | 2015-07-22 | 中国科学院金属研究所 | Apparatus for environment corrosion cracking test in wet hydrogen sulfide environment |
| CN103868811A (en) * | 2014-03-13 | 2014-06-18 | 上海海隆石油钻具有限公司 | Hydrogen sulfide concentration control device for sulfide stress corrosion uniaxial tensile test |
| 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 |
| CN104697873A (en) * | 2015-03-06 | 2015-06-10 | 合肥通用机械研究院 | Sulfide stress corrosion cracking testing apparatus |
| CN105954179A (en) * | 2016-04-25 | 2016-09-21 | 中国石油天然气集团公司 | Test method for measuring metallic material elemental sulfur stress corrosion cracking sensitivity |
| CN106442136A (en) * | 2016-10-18 | 2017-02-22 | 北京科技大学 | Device for testing stress corrosion behavior of metal material under fluid high pressure |
| CN109443892A (en) * | 2018-09-26 | 2019-03-08 | 上海海隆石油管材研究所 | The method of Fast Evaluation oil well pipe resisting sulfide stress corrosion cracking performance |
| CN111443029A (en) * | 2020-03-23 | 2020-07-24 | 中国石油天然气集团有限公司 | Simulation device and simulation method for hydrogen sulfide corrosion of pipe |
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Application publication date: 20210525 |