CN105954114B - Single cauldron bellows stress corrosion creep endurance test device - Google Patents
Single cauldron bellows stress corrosion creep endurance test device Download PDFInfo
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- CN105954114B CN105954114B CN201610503704.XA CN201610503704A CN105954114B CN 105954114 B CN105954114 B CN 105954114B CN 201610503704 A CN201610503704 A CN 201610503704A CN 105954114 B CN105954114 B CN 105954114B
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- kettle
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- corrugated pipe
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- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 230000007797 corrosion Effects 0.000 title claims abstract description 14
- 238000005260 corrosion Methods 0.000 title claims abstract description 14
- 150000003839 salts Chemical class 0.000 claims abstract description 42
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 15
- 239000010439 graphite Substances 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 230000008023 solidification Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- 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
- G01N2203/0071—Creep
-
- 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
- G01N2203/0236—Other environments
- G01N2203/024—Corrosive
-
- 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
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a single-kettle corrugated pipe stress corrosion creep endurance test device, wherein a kettle cover, an upright post and an upper frame plate are fixedly connected to a rack, a corrugated pipe is detachably and hermetically fixed between the kettle cover and a test kettle through a flange, a graphite crucible is used for containing solid molten salt for test and is detachably arranged in the test kettle, the upper end of a counter-force column passes through the flange to be fixed on the kettle cover, the lower end sequentially passes through the corrugated pipe and the flange, and the counter-force column extends into the test kettle to be fixed on a fixed plate; the upper end of the pull rod is connected with the loading device, the lower end of the pull rod sequentially penetrates through the kettle cover, the flange and the corrugated pipe, and extends into the test kettle to be connected with the upper clamp, and the lower clamp is fixed on the fixed plate; the loading device applies a pulling force required for the test to the test sample through the pull rod, and the test sample is detachably fixed between the upper clamp and the lower clamp. The device utilizes the mode that experimental cauldron and bellows effectively combine to replace original double-kettle structure, the problem that can't take out in the residual salt pipeline of solidification fused salt has effectually been solved.
Description
Technical Field
The invention relates to a material testing device, in particular to a single-kettle corrugated pipe stress corrosion creep endurance test device.
Background
The service life of the mechanical part often cannot reach the expected effect under certain special service environments, and the main reason is that the material is easy to generate stress corrosion to fail under the combined action of stress and special environments. The mechanical properties of the materials in a special environment are determined by test using a stress corrosion tester, and the test method can be referred to the standard HB 7235-1995, slow strain rate stress corrosion test method.
In general, the special environment medium required in the test kettle in the stress corrosion testing machine is injected into the kettle from the outside after the test kettle is installed. The molten salt is solid at standard temperature and atmospheric pressure, becomes liquid after the temperature rises, so that the difficulty is increased in stress corrosion test of the material under the liquid molten salt, and fig. 1 is a test device for injecting molten salt medium in a traditional mode. At present, a salt storage kettle and a test kettle are combined to perform a test by adopting a salt storage kettle and test kettle combined mode, but because the double kettles are sealed at high temperature, the structure is complex, the equipment cost is high, and meanwhile, after the test is finished, solid molten salt is easy to remain in a salt conveying pipeline and is difficult to take out.
Disclosure of Invention
The invention relates to a single-kettle corrugated pipe stress corrosion creep endurance testing machine, which aims to solve the problem that solid molten salt in the existing testing machine is easy to remain in a salt conveying pipeline and is difficult to take out.
The invention aims at realizing the following technical scheme:
the single-kettle corrugated pipe stress corrosion creep endurance test device comprises a kettle cover, wherein the kettle cover, an upright post and an upper frame plate are fixedly connected to a rack, and the kettle cover, the corrugated pipe and a test kettle are connected together through flanges; the upper end of the reaction column penetrates through the flange to be fixed on the kettle cover, and the lower end of the reaction column penetrates through the corrugated pipe and the flange in sequence to extend into the test kettle to be fixed on the fixing plate; the graphite crucible is used for containing solid molten salt for test and is detachably arranged in the test kettle; the upper end of the pull rod is connected with a loading device of the sample, the lower end of the pull rod sequentially penetrates through the kettle cover, the flange and the corrugated pipe, and extends into the test kettle to be connected with an upper clamp, and the lower clamp is fixed on a fixed plate; the loading device applies a pulling force required for the test to the test specimen through a pull rod, and the test specimen is detachably fixed between an upper clamp and a lower clamp.
Further, the flange between the kettle cover and the corrugated pipe is a single-layer flange on the corrugated pipe; the flange between the corrugated pipe and the test kettle is double-layered, namely a lower flange of the corrugated pipe and a flange of the kettle, and the lower flange and the flange are detachably and hermetically connected together.
Further, when the molten salt in the graphite crucible is solid, the sample and the lower clamp are positioned above the molten salt; when the molten salt in the graphite crucible is in a liquid state, the corrugated pipe is compressed/stretched through the electric push rod, so that the test kettle moves up/down relatively, and the test sample and the lower clamp are immersed into the liquid molten salt or separated from the liquid molten salt.
Further, a sealing device between the kettle flange and the lower flange of the corrugated pipe is a graphite sealing ring.
The beneficial technical effects of the invention are as follows:
the device utilizes flexible function of bellows can separate anchor clamps and liquid fused salt under high temperature sealing condition, utilizes experimental cauldron and bellows effective mode of combining to replace original double kettle structure, has cancelled salt storage cauldron and defeated salt pipeline, the effectual problem of solidifying unable takeout in the salt pipeline of remaining of fused salt that has solved.
Drawings
FIG. 1 is a schematic diagram of a conventional double-kettle tester;
FIG. 2 is a schematic diagram of the structure of the testing machine of the present invention;
the device comprises a 1-lower clamp, a 2-fixed plate, a 3-sample, a 4-upper clamp, a 5-graphite crucible, a 6-counter-force column, a 7-test kettle, an 8-pull rod, a 9-kettle flange, a 10-corrugated pipe lower flange, an 11-corrugated pipe, a 12-corrugated pipe upper flange, a 13-kettle cover, a 14-upright post, a 15-upper frame plate, a 16-movable trolley, a 17-salt storage kettle, a 18-salt conveying pipeline, a 19-test kettle, a 20-test clamp, a 21-frame and a 22-lifting device.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a structure of an existing double-kettle testing machine, the structure is a structural form of an existing molten salt environmental stress corrosion testing machine, the device comprises a salt storage kettle 17 and a testing kettle 19, molten salt is heated and melted in the salt storage kettle 17, then is injected into the testing kettle 19 through a salt conveying pipeline 18, and the testing kettle 19 is tested after the temperature reaches the requirement. Because the salt storage kettle 17 and the test kettle 19 are sealed at high temperature, the structure is complex, the equipment cost is high, and meanwhile, after the test is finished, the solid molten salt is easy to remain in the salt conveying pipeline and is not easy to take out.
Fig. 2 is a schematic diagram of the structure of the testing machine of the invention, which mainly comprises a lower clamp 1, a fixed plate 2, a sample 3, an upper clamp 4, a graphite crucible 5, a counter-force column 6, a testing kettle 7, a pull rod 8, a kettle flange 9, a lower corrugated pipe flange 10, a corrugated pipe 11, an upper corrugated pipe flange 12, a kettle cover 13, a stand column 14 and an upper stand plate 15. The kettle cover 13, the upright post 14 and the upper frame plate 15 are fixedly connected to the frame, the corrugated pipe 11 is telescopically fixed between the kettle cover 13 and the test kettle 7, the kettle cover 13, the corrugated pipe 11 and the test kettle 7 are detachably connected together through the corrugated pipe upper flange 12, the corrugated pipe lower flange 10 and the kettle flange 9 in sequence, wherein the corrugated pipe lower flange 10 and the kettle flange 9 are connected together through detachable bolts, and the joint can be sealed by a graphite sealing ring; the upper end of the counter-force column 6 passes through the corrugated pipe upper flange 12 to be fixed on the kettle cover 13, and the lower end sequentially passes through the corrugated pipe 11, the corrugated pipe lower flange 10 and the kettle flange 9 to extend into the test kettle 7 to be fixed on the fixed plate 2; the upper end of the pull rod 8 is connected with a loading device, the lower end sequentially passes through the kettle cover 13, the corrugated pipe upper flange 12, the corrugated pipe 11, the corrugated pipe lower flange 10 and the kettle flange 9, and extends into the test kettle 7 to be connected with the upper clamp 4, and the lower clamp 1 is fixed on the fixed plate 2; the loading device applies a pulling force required for the test to the specimen 3 through the pull rod 8, and the specimen 3 is detachably fixed between the upper clamp 4 and the lower clamp 1.
Before the test starts, the corrugated pipe 11 is in an elongation state, and the test kettle 7 is separated from the corrugated pipe 11; firstly, fixing a sample 3 between an upper clamp 4 and a lower clamp 1, filling solid molten salt into a graphite crucible 5, placing the graphite crucible 5 into a test kettle 7, then fixing the test kettle 7 and a corrugated pipe 11 together in a sealing way through a connecting kettle flange 9 and a corrugated pipe lower flange 10, heating the test kettle 7 when the sample 3 and the lower clamp 1 are positioned above the solid molten salt, compressing the corrugated pipe 11 by an electric push rod after the solid molten salt melts, enabling the test kettle 7 to move upwards relatively, immersing the sample 3 and the lower clamp 1 into liquid molten salt, continuously heating the test kettle 7, starting the test after the temperature reaches the test requirement, and after the test is finished, stretching the corrugated pipe 11 by the electric push rod, enabling the test kettle 7 to move downwards relatively, thereby separating the sample 3 from the lower clamp 1 and the liquid molten salt.
The sealing device between the kettle flange 9 and the lower corrugated pipe flange 10 can be a graphite sealing ring or the like.
While particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely illustrative, and that many changes and modifications may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (2)
1. The single-kettle corrugated pipe stress corrosion creep endurance test device is characterized by comprising a kettle cover (13), wherein the kettle cover (13), a stand column (14) and an upper frame plate (15) are fixedly connected to a rack, a corrugated pipe (11) is telescopically fixed between the kettle cover (13) and a test kettle (7), and the kettle cover (13), the corrugated pipe (11) and the test kettle (7) are detachably connected together sequentially through a corrugated pipe upper flange (12), a corrugated pipe lower flange (10) and a kettle flange (9); the upper end of the counter-force column (6) passes through the upper flange (12) of the corrugated pipe and is fixed on the kettle cover (13), and the lower end sequentially passes through the corrugated pipe (11), the lower flange (10) of the corrugated pipe and the kettle flange (9) and extends into the test kettle (7) to be fixed on the fixed plate (2); the graphite crucible (5) is used for containing solid molten salt for test and is detachably arranged in the test kettle (7); the upper end of the pull rod (8) is connected with the loading device, the lower end sequentially passes through the kettle cover (13), the corrugated pipe upper flange (12), the corrugated pipe (11), the corrugated pipe lower flange (10) and the kettle flange (9), and extends into the test kettle (7) to be connected with the upper clamp (4), and the lower clamp (1) is fixed on the fixed plate (2); the loading device applies a pulling force required by a test to the sample (3) through a pull rod (8), and the sample (3) is detachably fixed between the upper clamp (4) and the lower clamp (1);
when molten salt in the graphite crucible (5) is solid, the sample (3) and the lower clamp (1) are positioned above the molten salt; when the molten salt in the graphite crucible (5) is in a liquid state, the corrugated pipe (11) is compressed through the electric push rod, so that the test kettle (7) moves upwards relatively to immerse the sample (3) and the lower clamp (1) into the liquid molten salt, or the corrugated pipe (11) is stretched through the electric push rod, so that the test kettle (7) moves downwards relatively to separate the sample (3) and the lower clamp (1) from the liquid molten salt.
2. The single kettle bellows stress corrosion creep endurance test apparatus of claim 1, wherein: the sealing device between the kettle flange (9) and the corrugated pipe lower flange (10) is a graphite sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503704.XA CN105954114B (en) | 2016-06-30 | 2016-06-30 | Single cauldron bellows stress corrosion creep endurance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503704.XA CN105954114B (en) | 2016-06-30 | 2016-06-30 | Single cauldron bellows stress corrosion creep endurance test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105954114A CN105954114A (en) | 2016-09-21 |
| CN105954114B true CN105954114B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610503704.XA Active CN105954114B (en) | 2016-06-30 | 2016-06-30 | Single cauldron bellows stress corrosion creep endurance test device |
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| CN (1) | CN105954114B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769450B (en) * | 2016-11-29 | 2019-05-03 | 中国科学院上海应用物理研究所 | Fused salt environmental mechanics performance testing device, system and method |
| CN108072567B (en) * | 2017-12-08 | 2021-01-15 | 广州特种承压设备检测研究院 | Plastic constant-temperature stress corrosion experimental device and method |
| CN111693449B (en) * | 2020-06-22 | 2022-05-17 | 中国核动力研究设计院 | Telescopic corrosion kettle and corrosion test method for liquid lead-bismuth alloy |
| CN112595575B (en) * | 2020-11-09 | 2022-03-18 | 南京工业大学 | Test device and method for testing various mechanical properties in high-temperature molten salt corrosion environment |
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| CN105954114A (en) | 2016-09-21 |
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