CN116519471B - In-situ double-shaft environment system in lead bismuth environment - Google Patents
In-situ double-shaft environment system in lead bismuth environment Download PDFInfo
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- CN116519471B CN116519471B CN202310504146.9A CN202310504146A CN116519471B CN 116519471 B CN116519471 B CN 116519471B CN 202310504146 A CN202310504146 A CN 202310504146A CN 116519471 B CN116519471 B CN 116519471B
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- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 73
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 230000007613 environmental effect Effects 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000010453 quartz Substances 0.000 claims abstract description 31
- 238000005260 corrosion Methods 0.000 claims abstract description 28
- 230000007797 corrosion Effects 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001301 oxygen Substances 0.000 claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000003723 Smelting Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000012669 compression test Methods 0.000 abstract description 2
- 238000009661 fatigue test Methods 0.000 abstract description 2
- 238000004154 testing of material Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910001152 Bi alloy Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- 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
- G01N3/08—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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
-
- 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
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- 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 belongs to the technical field of mechanical property testing of materials, and discloses an in-situ biaxial environment system in a lead-bismuth environment, wherein four loading shafts respectively clamp a cross biaxial sample through a sample clamping fixture; the cross-shaped double-shaft sample is tested in a double-shaft quartz environmental chamber, the double-shaft quartz environmental chamber is of a double-circular-tube penetrating structure made of transparent quartz materials, four ports of the double-shaft quartz environmental chamber are respectively connected with a lead bismuth corrosion environmental tube through a sealing clamp and a sealing corrugated tube, and the lead bismuth corrosion environmental tube is arranged outside a loading shaft and is sealed and fixed; two coaxial lead-bismuth corrosion environmental pipes are respectively provided with a liquid inlet pipeline and a liquid outlet pipeline for connecting a lead-bismuth temperature control oxygen control smelting furnace. The invention can provide a safe and reliable high-temperature liquid lead bismuth environment with quantitative oxygen concentration for a material mechanical test, and can also use a non-contact video extensometer to perform strain measurement under the necessary conditions; the tester can be used for stretching, compression and fatigue tests, and can be matched with various biaxial testing machines to complete testing tasks.
Description
Technical Field
The invention belongs to the technical field of mechanical property testing of materials, and particularly relates to an in-situ biaxial environment system in a lead-bismuth environment.
Background
The nuclear energy is taken as a mature, safe and reliable clean energy source and is widely valued worldwide. In the fourth generation nuclear reactor, the lead-bismuth reactor is taken as a new generation reactor with the most development potential, the reactor core needs to take away generated heat by a coolant to cool the reactor core, and the safety of the reactor can be greatly improved by using the lead-bismuth alloy instead of water as the coolant because of the low melting point, high boiling point and good heat conduction performance of the lead-bismuth alloy, and the lead-bismuth alloy has good neutron performance and also has good performance when being used as a spallation target of an ADS system. However, in the experimental process, the liquid lead bismuth is found to have stronger corrosion and embrittlement effects on structural materials, meanwhile, the cladding material can be subjected to complex load action in the service process, and the cooperation of the complex load action and the corrosion effects of the liquid lead bismuth provides higher challenges for the safety performance of the cladding material, so that an in-situ biaxial test system under the lead bismuth environment is required to be researched.
The existing lead bismuth in-situ double-shaft experimental equipment is complex in structure, high in cost, complex in operation and poor in economical efficiency, and the in-situ double-shaft environmental system in the lead bismuth environment is developed through special structural design, so that the lead bismuth in-situ double-shaft experimental equipment can be adapted to a main-stream in-situ double-shaft experimental machine on the market, and the problems can be solved.
Disclosure of Invention
The invention provides an in-situ double-shaft environment system in a lead bismuth environment, which can provide a safe and reliable high-temperature liquid lead bismuth environment with quantitative oxygen concentration for a material mechanical test, and can also use a scheme of a non-contact video extensometer to carry out strain measurement under the necessary condition; the device can be used for stretching, compression and fatigue tests, and can be matched with various biaxial testing machines to complete testing tasks; not only can adapt to the structure of the horizontal testing machine, but also can adapt to the structure of the vertical testing machine.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides an in-situ double-shaft environment system in a lead bismuth environment, which comprises four loading shafts which are coplanar and are arranged at an included angle of 90 degrees, wherein the four loading shafts are respectively connected with four sample clamping clamps, and the four sample clamping clamps are used for clamping cross double-shaft samples; the cross-shaped double-shaft sample is used for testing in a double-shaft quartz environmental chamber, the double-shaft quartz environmental chamber is of a double-circular-tube penetrating structure made of transparent quartz materials, four ports of the double-shaft quartz environmental chamber are respectively connected with one end of a sealing corrugated pipe through sealing hoops, the other end of the sealing corrugated pipe is welded with the front end of a lead bismuth corrosion environmental pipe, the lead bismuth corrosion environmental pipe is arranged outside a loading shaft, and the rear end of the lead bismuth corrosion environmental pipe is welded and fixed on the loading shaft and forms a seal, so that the four lead bismuth corrosion environmental pipes are communicated with the interior of the double-shaft quartz environmental chamber; the two coaxial lead-bismuth corrosion environment pipes are respectively provided with a liquid inlet pipeline and a liquid outlet pipeline which are respectively used for connecting an outlet and an inlet of the lead-bismuth temperature control oxygen control smelting furnace.
Further, the double-shaft quartz environmental chamber is formed by splicing an upper chamber body and a lower chamber body, and sealing notches are formed at the connecting positions of the upper chamber body and the lower chamber body; the upper cabin body and the lower cabin body form a closed sealing groove at the joint through an upper sealing notch and a lower sealing notch, and a sealing graphite gasket is arranged in the closed sealing groove; due to the fact that the thermal deformation of the quartz material is large, the volume of the upper cabin body and the volume of the lower cabin body are gradually increased along with the temperature rise after the temperature rise, and therefore the sealing graphite gasket is extruded and sealed.
Further, the liquid inlet pipeline and the liquid outlet pipeline on the two coaxial lead-bismuth corrosion environment pipes are arranged oppositely.
Further, the liquid inlet pipeline and the liquid outlet pipeline are both provided with temperature sensors.
Further, the rear end of the sample clamping fixture is in threaded connection with the loading shaft, and the front end of the sample clamping fixture is provided with a fixture fixing block for fixing the clamping end of the cross double-shaft sample.
Further, the fixture fixing block consists of an upper plate, a lower plate and an end plate which is used for connecting the rear ends of the upper plate and the lower plate into a whole, wherein the upper plate is provided with a through hole, the lower plate is provided with a threaded hole, and the through hole and the threaded hole are coaxially arranged; the clamping end of the cross double-shaft sample is used for being inserted between the upper plate and the lower plate and is also provided with a through hole; the half-tooth screw is adopted to sequentially penetrate through the through hole of the upper plate and the through hole of the cross double-shaft sample, and after the half-tooth screw is screwed with the threaded hole of the lower plate, the clamping end of the cross double-shaft sample can be pressed and fastened by the upper plate and the lower plate of the clamp fixing block.
Further, the opposite surfaces of the upper plate and the lower plate of the fixture fixing block are respectively provided with anti-slip diagonal lines.
The beneficial effects of the invention are as follows:
the invention can realize the biaxial environment test with smaller volume, the volume of the needed environment medium is smaller, and the circulating flow can be realized all the time, thereby being suitable for the mechanical test under various high temperature, liquid metal and chemical corrosion environments and filling the blank of the in-situ biaxial force environment of the high temperature miniature lead bismuth environment in the domestic market.
The invention can realize the strict sealing of high-temperature gas and high-temperature liquid without influencing the load, and has the advantages of wide applicability, good economy, compact structure and simple operation.
The cross-shaped double-shaft sample can be conveniently clamped, and meanwhile, the complicated step of adjusting the double shaft to be neutral is omitted due to the flexible fixing mode, and meanwhile, the requirements of various experimental forms and sample forms can be met through common threaded connection.
In conclusion, the structural material for the lead-bismuth environment is taken as a research object, and the designed in-situ biaxial environment system under the lead-bismuth environment can provide support for measuring mechanical performance parameters of the structural material under the high-temperature lead-bismuth environment and the action of a large load, and has important significance for the development of nuclear industry in China.
Drawings
FIG. 1 is a schematic diagram of an in-situ biaxial environment system in a lead bismuth environment of the present invention;
FIG. 2 is a schematic diagram of the connection of an in-situ dual-axis environmental system in a lead bismuth environment with a lead bismuth temperature controlled oxygen controlled furnace according to the present invention;
FIG. 3 is a schematic diagram of the structure of a biaxial quartz environmental chamber in an in-situ biaxial environmental system in a lead bismuth environment of the present invention;
FIG. 4 is a schematic diagram of the sealing of a biaxial quartz capsule in an in-situ biaxial environmental system in a lead bismuth environment of the present invention;
fig. 5 is a schematic structural diagram of a sample clamping fixture in an in-situ biaxial environment system under a lead bismuth environment of the present invention.
In the above figures:
1-loading shaft; 2-lead bismuth corroding the environmental tube; 3-a liquid inlet pipeline; 4-a liquid outlet pipeline; 5-sealing the bellows; 6, a sealing clamp; 7-biax quartz environmental chamber, 7-1: upper hull, 7-2: lower cabin, 7-3: sealing the graphite pad; 8-cross biaxial specimen; 9-sample clamping jig, 9-1: clamp fixing block, 9-2: a half-tooth screw; 10-lead bismuth temperature control oxygen control smelting furnace.
Detailed Description
For a further understanding of the nature, features, and effects of the present invention, the following examples are set forth to illustrate, and are to be considered in connection with the accompanying drawings:
as shown in fig. 1, the embodiment of the invention provides an in-situ biaxial environment system in a lead bismuth environment, which mainly comprises a loading mechanism, an environment cavity and a sealing mechanism.
The loading mechanism comprises four loading shafts 1 and four sample holding jigs 9. The four loading shafts 1 are arranged on the same horizontal plane and are respectively connected with the four sample clamping fixtures 9, so that the stretching or compression action of the four sample clamping fixtures 9 in four directions (each two adjacent directions form an included angle of 90 degrees) on the same horizontal plane is realized. The loading shaft 1 can be adapted to most biaxial testing machines on the market to complete various tests under biaxial load, and can be plate-shaped, tubular and the like to adapt to various test requirements.
The environment cavity comprises four lead bismuth corrosion environment pipes 2, a liquid inlet pipeline 3, a liquid outlet pipeline 4 and a double-shaft quartz environment cabin 7.
The lead bismuth corrosion environment pipe 2 is welded at the rear end outside the loading shaft 1 and is mainly used for storing and transporting liquid lead bismuth. As shown in fig. 2, two coaxial lead-bismuth corrosion environmental pipes 2 of each group are respectively provided with a liquid inlet pipeline 3 and a liquid outlet pipeline 4 which are respectively used for connecting an outlet and an inlet of the lead-bismuth temperature control oxygen control furnace 10, so that a high-temperature liquid lead-bismuth environment with quantitative oxygen concentration is realized. Moreover, the same group of liquid inlet pipeline 3 and liquid outlet pipeline 4 are preferably arranged in opposite directions on the lead bismuth temperature control oxygen control smelting furnace 10 so as to ensure that liquid lead bismuth is fully filled in the test pipeline. In addition, the liquid inlet pipeline 3 and the liquid outlet pipeline 4 can be further provided with temperature sensors for monitoring the temperature of the inlet and the outlet. The liquid lead bismuth is melted and oxygen controlled in the lead bismuth temperature controlled oxygen controlled furnace 10 and is led to the lead bismuth corrosion environment pipe 2 after the oxygen concentration and temperature are stabilized.
The biaxial quartz environmental chamber 7 is mainly used for providing a lead bismuth corrosion environment for the sample clamping fixture 9. The double-shaft quartz environmental chamber 7 is made of transparent quartz materials, the materials are high-temperature resistant, light transmittance can be guaranteed, observation is convenient, and meanwhile, the measurement and analysis of strain and a strain field can be carried out by adapting to a non-contact video extensometer under transparent liquid. In addition, the corrosive liquid in the invention can be replaced by other corrosive media in liquid and gas forms.
The double-shaft quartz environmental chamber 7 adopts a double-circular-tube penetrating structure, so that the liquid quantity can be reduced to the greatest extent on one hand, and the accurate control of the temperature can be realized more easily on the other hand. As shown in fig. 3 and 4, the dual-shaft quartz environmental chamber 7 is formed by splicing an upper chamber body 7-1 and a lower chamber body 7-2, and the upper chamber body 7-1 and the lower chamber body 7-2 are cross-shaped semicircular pipe bodies. The connection parts of the upper cabin body 7-1 and the lower cabin body 7-2 are provided with sealing notches which are formed by the end surfaces of the L-shaped sections; the L-shaped cross sections of the upper cabin body 7-1 and the lower cabin body 7-2 are reversely arranged, so that the upper cabin body 7-1 and the lower cabin body 7-2 form a sealed sealing groove (namely, the end surfaces of the upper L-shaped cross section and the lower L-shaped cross section are surrounded) at the joint, and a sealed graphite gasket 7-3 is arranged in the sealed sealing groove. According to the invention, by utilizing the characteristic that the thermal deformation of the quartz glass is larger, the volumes of the upper cabin body 7-1 and the lower cabin body 7-2 are gradually increased along with the temperature rise after the temperature rise, so that the sealing graphite gasket 7-3 is extruded and sealed, and the sealing is more reliable.
The sealing mechanism comprises four sealing bellows 5 and four sealing clips 6. One end of each sealing corrugated pipe 5 is welded with the front end of the lead bismuth corrosion environment pipe 2, and the other end of each sealing corrugated pipe is in sealing connection with the end part of the double-shaft quartz environment cabin 7 through the sealing clamp 6, so that the four lead bismuth corrosion environment pipes 2 are communicated with the inside of the double-shaft quartz environment cabin 7, and sealing of liquid metal in the inside is achieved. The expansion and contraction performance of the sealing corrugated pipe 5 can ensure the sealing performance, provide an actuating space to the maximum extent, reduce the influence on the load and realize more accurate measurement of the load.
Referring to fig. 5, the rear end of the sample clamping fixture 9 is screwed to the loading shaft 1, and the front end of the sample clamping fixture 9 is set as a fixture fixing block 9-1, and the fixture fixing block 9-1 is used for clamping and fixing the clamping end of the cross-shaped biaxial sample 8.
As a preferred embodiment, the jig fixing block 9-1 is composed of an upper plate, a lower plate, and an end plate integrally connecting rear ends of the upper plate and the lower plate, the upper plate is provided with a through hole, the lower plate is provided with a threaded hole, and the through hole and the threaded hole are coaxially arranged. The clamping end of the cross-shaped double-shaft sample 8 is inserted between the upper plate and the lower plate of the fixture fixing block 9-1, through holes are also formed, the half-tooth screw 9-2 sequentially penetrates through the through holes of the upper plate, the through holes of the cross-shaped double-shaft sample 8 and the threaded holes of the lower plate, and after the half-tooth screw 9-2 is screwed with the threaded holes of the lower plate, the clamping end of the cross-shaped double-shaft sample 8 is pressed and fixed by the upper plate and the lower plate of the fixture fixing block 9-1. Furthermore, the upper plate and the lower plate of the fixture fixing block 9-1 can be provided with anti-skid diagonal lines inclined by 45 degrees respectively, so that the cross double-shaft sample 8 can be more effectively fixed. The clamp fixing block 9-1 has compact structure and simple operation, and can ensure the clamping tightness even in a high-temperature corrosion environment. In addition, the half-tooth screw 9-2 deforms along with the loading of the cross-shaped double-shaft sample 8, the thread structure of the half-tooth screw is not damaged, and the half-tooth screw can be reused for multiple times.
Preferably, the cross-shaped biaxial specimen 8 in the present invention can be replaced with a specimen form such as uniaxial bar, plate, etc., and a wider variety of specimens and test forms can be adapted by replacing a jig, etc., including but not limited to single, biaxial stretching, compression, fatigue, fracture, creep, crack growth, etc., experimental types.
The whole device can be tested in a high-temperature environment, related accessories can bear higher temperature, and various sealing mechanisms can safely and stably run for a long time in the environment of not higher than 1000 ℃.
The in-situ biaxial environment system in the lead bismuth environment has the following use process:
firstly, a cross double-shaft sample 8 is fixed with four sample clamping fixtures 9, the sample clamping fixtures 9 are connected with a loading shaft 1 through threads, a double-shaft quartz environmental chamber 7 is installed outside the cross double-shaft sample 8, then a sealing corrugated pipe 5 is fixed with the double-shaft quartz environmental chamber 7 through a sealing clamp 6, and the sealing corrugated pipe 5 is welded with a lead bismuth corrosion environmental pipe 2 and the lead bismuth corrosion environmental pipe 2 is welded with the loading shaft 1 in advance, so that integral sealing is realized.
The in-situ biaxial environment system is connected with an in-plane biaxial testing machine, then a liquid inlet pipeline 3 and a liquid outlet pipeline 4 are connected with a lead bismuth temperature control oxygen control furnace 10, the lead bismuth temperature control oxygen control furnace 10 carries out heating operation, and after the temperature and the oxygen concentration reach target set values, liquid lead bismuth is introduced into the in-situ biaxial environment system to start testing. During the test, the temperature detection indication is observed, so that the cross-shaped biaxial sample 8 is always in a relatively stable temperature environment.
Therefore, the in-situ double-shaft environment system in the lead bismuth environment has the advantages of small structure and simple mechanism, can reduce equipment and test cost as much as possible while realizing environment requirements, has strong universality of various used parts, and can adapt to the requirements of various environments and test by simple structural change. The method is matched with the air path control attached to the testing machine, ensures safety, prevents high-temperature liquid metal leakage from affecting the test result, fills the gap of a small double-shaft environment system used in a high-temperature lead bismuth environment in the domestic market, and has great significance for the development of novel nuclear industry in China.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many changes may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are to be construed as falling within the scope of the present invention.
Claims (6)
1. The in-situ double-shaft environment system in the lead bismuth environment comprises four loading shafts which are coplanar and are arranged at an included angle of 90 degrees, wherein the four loading shafts are respectively connected with four sample clamping clamps, and the four sample clamping clamps are used for clamping cross double-shaft samples; the test device is characterized in that the cross-shaped double-shaft sample is used for testing in a double-shaft quartz environmental chamber, the double-shaft quartz environmental chamber is of a double-circular-tube penetrating structure made of transparent quartz materials, four ports of the double-shaft quartz environmental chamber are respectively connected with one end of a sealing corrugated pipe through sealing hoops, the other end of the sealing corrugated pipe is welded with the front end of a lead-bismuth corrosion environmental pipe, the lead-bismuth corrosion environmental pipe is arranged outside a loading shaft, and the rear end of the lead-bismuth corrosion environmental pipe is welded and fixed on the loading shaft and forms a seal, so that the four lead-bismuth corrosion environmental pipes are communicated with the interior of the double-shaft quartz environmental chamber; the two coaxial lead-bismuth corrosion environment pipes are respectively provided with a liquid inlet pipeline and a liquid outlet pipeline which are respectively used for connecting an outlet and an inlet of the lead-bismuth temperature control oxygen control smelting furnace;
the double-shaft quartz environmental cabin is formed by splicing an upper cabin body and a lower cabin body, and sealing notches are formed at the connecting positions of the upper cabin body and the lower cabin body; the upper cabin body and the lower cabin body form a closed sealing groove at the joint through an upper sealing notch and a lower sealing notch, and a sealing graphite gasket is arranged in the closed sealing groove; due to the fact that the thermal deformation of the quartz material is large, the volume of the upper cabin body and the volume of the lower cabin body are gradually increased along with the temperature rise after the temperature rise, and therefore the sealing graphite gasket is extruded and sealed.
2. The in-situ biaxial environment system under lead bismuth according to claim 1, wherein the liquid inlet pipeline and the liquid outlet pipeline on two coaxial lead bismuth corrosion environment pipes are arranged oppositely.
3. The in-situ biaxial environment system under lead bismuth environment according to claim 1, wherein the liquid inlet pipeline and the liquid outlet pipeline are both provided with temperature sensors.
4. The in-situ biaxial environment system under the lead bismuth environment according to claim 1, wherein the rear end of the sample clamping fixture is connected with the loading shaft through threads, and the front end of the sample clamping fixture is provided as a fixture fixing block for fixing the clamping end of the cross-shaped biaxial sample.
5. The in-situ biaxial environment system under the lead bismuth environment according to claim 4, wherein the fixture fixing block consists of an upper plate, a lower plate and an end plate which is used for connecting the rear ends of the upper plate and the lower plate into a whole, the upper plate is provided with a through hole, the lower plate is provided with a threaded hole, and the through hole and the threaded hole are coaxially arranged; the clamping end of the cross double-shaft sample is used for being inserted between the upper plate and the lower plate and is also provided with a through hole; the half-tooth screw is adopted to sequentially penetrate through the through hole of the upper plate and the through hole of the cross double-shaft sample, and after the half-tooth screw is screwed with the threaded hole of the lower plate, the clamping end of the cross double-shaft sample can be pressed and fastened by the upper plate and the lower plate of the clamp fixing block.
6. The in-situ biaxial environment system of claim 5 wherein the opposed faces of the upper and lower plates of the fixture block are provided with anti-slip diagonal lines, respectively.
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| CN202310504146.9A CN116519471B (en) | 2023-05-06 | 2023-05-06 | In-situ double-shaft environment system in lead bismuth environment |
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| CN202310504146.9A CN116519471B (en) | 2023-05-06 | 2023-05-06 | In-situ double-shaft environment system in lead bismuth environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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