CN111122342A - Vacuum temperature-changing environment loading device for neutron stress spectrometer - Google Patents
Vacuum temperature-changing environment loading device for neutron stress spectrometer Download PDFInfo
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- CN111122342A CN111122342A CN201911341672.8A CN201911341672A CN111122342A CN 111122342 A CN111122342 A CN 111122342A CN 201911341672 A CN201911341672 A CN 201911341672A CN 111122342 A CN111122342 A CN 111122342A
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- 238000012360 testing method Methods 0.000 claims abstract description 18
- 230000007613 environmental effect Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 28
- 239000000498 cooling water Substances 0.000 claims description 22
- 238000001956 neutron scattering Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 12
- 239000011261 inert gas Substances 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 5
- 230000010354 integration Effects 0.000 abstract description 3
- 238000013001 point bending Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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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
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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
- G01N3/02—Details
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending 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
- G01N2203/0014—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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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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
- G01N2203/0023—Bending
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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
- G01N2203/0222—Temperature
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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
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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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
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The invention relates to a vacuum temperature-changing environment loading device for a neutron stress spectrometer, and belongs to the field of material mechanics testing. The device comprises an environment cavity component, a variable temperature cavity component, an observation window component and a clamp component, wherein the variable temperature cavity component is fixed on the environment cavity component; the observation window assembly is connected with the environment cavity assembly through a rotating pin shaft; the clamp assembly is connected with the environmental chamber assembly through a seal ring. Can provide a variable temperature environment with continuous change from-55 ℃ to 250 ℃, and can provide an atmosphere such as vacuum or inert gas for a tested piece. The temperature loading is completed through the heat-conducting medium, and the temperature fluctuation of the tested piece is very small. Has the advantages that: the integration level of the temperature-changing environment cavity is higher, and the tested piece is easier to replace; the test piece can be subjected to loading such as stretching, compression, three-point bending and the like; the device can be matched with a stretching table to obtain information such as microscopic deformation, texture evolution and the like of a tested piece under a neutron scattering stress spectrometer, and has guiding significance for researching a damage mechanism of a material under a variable temperature condition.
Description
Technical Field
The invention relates to the field of material mechanics testing, in particular to a vacuum temperature-changing environment loading device for a neutron stress spectrometer. The variable-temperature environment cavity can provide a temperature environment continuously changing from minus 55 ℃ to minus 250 ℃ and atmospheres such as vacuum or inert gas for a tested piece, and is matched with a stretching table to carry out mechanical loading on the tested piece, so that information such as microscopic deformation, texture evolution and the like of the tested piece can be obtained under a neutron scattering stress spectrometer, and strain of the tested piece can be synchronously obtained by matching with a speckle camera, and the research on the mechanical property of the material under the variable-temperature environment is facilitated.
Background
The neutron scattering technology becomes a powerful means for researching the material performance by virtue of excellent deep penetration and phase sensitivity, and the technology can acquire information such as internal strain of the material and evolution of microtexture by matching with an in-situ loading technology, so that the combined research on the macroscopic performance and microstructure change of the material under the service condition can be realized. At present, relevant laboratories abroad take a neutron scattering technology as a research key point, and simultaneously provide a corresponding environment and mechanical loading device for a neutron scattering stress spectrometer, so that necessary experimental data are provided for various micro and mesoscopic mechanical models, and great help is provided for establishing new criteria of material damage. However, the neutron scattering technology in China is in a starting stage, and a testing instrument and an environmental device which are suitable for neutron scattering analysis are still in an initial stage of research and development.
In addition, some devices in the fields of aerospace, automobiles, ships, war industry and the like are often in service under the working conditions of continuous change of high temperature and low temperature, and along with the development of material technology, the fields have higher requirements on the mechanical property test of materials in the temperature-changing environment. Most of the existing environment loading devices can only realize single temperature loading, but the environment loading devices capable of realizing continuous variable temperature loading are not suitable for in-situ observation under a neutron scattering stress spectrometer due to large volume. Therefore, the research on the temperature-variable environment loading device for neutron scattering analysis is of great significance.
Disclosure of Invention
The invention aims to provide a vacuum temperature-changing environment loading device for a neutron stress spectrometer, which solves the problem of in-situ test of the mechanical property of a material under the condition that the temperature is continuously changed from below zero to above zero, and realizes the integrated use of the neutron stress spectrometer. The invention can realize the continuous change of the temperature of the tested piece from-55 ℃ to 250 ℃, provide the atmosphere of vacuum or inert gas and the like for the tested piece, carry out the loading of stretching, compressing, three-point bending and the like on the tested piece by matching the quick-change clamp head with the stretching platform, and analyze the information of the micro deformation, the texture evolution and the like of the tested piece in the loading process through neutron scattering. The temperature loading is completed through the heat-conducting medium, and the heat-conducting medium circulates through the temperature-changing cavity to carry out temperature loading on the tested piece through heat radiation; the control system enables the temperature fluctuation of the tested piece to be smaller through feedback adjustment. According to the invention, the water cooling device is arranged on the clamp, so that the influence of temperature on an external sensor can be effectively isolated.
The above object of the present invention is achieved by the following technical solutions:
the vacuum variable-temperature environment loading device for the neutron stress spectrometer comprises an environment cavity assembly, a variable-temperature cavity assembly, an observation window assembly and a clamp assembly, wherein the variable-temperature cavity assembly is fixed on the environment cavity assembly; the observation window assembly is connected with the environment cavity assembly through a rotating pin shaft 13; the clamp assembly is connected with the environment cavity assembly through a sealing ring.
The environment cavity component is as follows: the knurled nut 1 is connected with the environment cavity 16 through a pin shaft, the air release port 9, the vacuum joint 10 and the air inlet 22 are all welded on the environment cavity 16, and the rotating pin shaft 13 is installed on the environment cavity 16; the thermocouple 14 is connected with an environment cavity 16 through a locking nut 15; a sealing flange 20 is fixed on the environment cavity 16, and a sealing cover 18 is fixed on the sealing flange 20; the round nut 21 is in threaded connection with the environment cavity 16; the vacuum gauge 23 is connected with an interface welded on the environment cavity 16 through threads; two auxiliary thermocouples 24 are provided, each connected to the environmental chamber 16 by a lock nut 15.
The observation window assembly is as follows: the front window frame 3 and the rear window frame 12 are connected with an environment cavity 16 through a rotating pin shaft 13 and are respectively arranged in front of and behind the environment cavity 16; four uniformly distributed flange plates for fixing are welded on the rear window frame 12; the front and rear viewing window frames are respectively provided with two viewing window flange plates I2, a neutron viewing window I5, a neutron viewing window II 29 and a viewing window flange plate II 30, the neutron viewing window I5 is fixed on the viewing window frame through the viewing window flange plate I2 through fastening bolts, and the neutron viewing window II 29 is fixed on the viewing window frame through the viewing window flange plate II 30 through fastening bolts; the front window vacuum joint 17 is welded on the front window frame 3, and the rear window vacuum joint 11 is welded on the rear window frame 12; the knurled nut 1 locks the front and rear window frames and the environmental chamber 16 to form a closed space.
The temperature-changing cavity component comprises: the heat-conducting medium inlet 4 and the heat-conducting medium outlet 19 are fixedly connected with the temperature-changing cavity 25 through fastening bolts and are connected with the sealing cover 18 and the sealing flange plate 20 through sealing rings; the temperature-changing cavity 25 is fixed on the environment cavity 16 through bolts.
The clamp assembly is as follows: a cooling water inlet 6 and a cooling water outlet 8 are respectively welded on the clamp 7, and an annular cooling water tank is arranged on the clamp 7; the clamp 7 is connected with the environment cavity 16 through a sealing ring and a round nut 21; the clamp connecting piece 26 is fixedly connected with the clamp 7 through an inner hexagon bolt, and the clamp head 27 is connected with the clamp connecting piece 26 through a T-shaped groove; the test piece 28 is placed between the two jig heads 27.
The clamp assembly adopts a sectional connection mode, so that the type of the clamp head 27 and the tested piece 28 can be conveniently replaced.
The invention has the beneficial effects that: the design is novel, and the structure is simple. The temperature-variable environment which is continuously changed from minus 55 ℃ to 250 ℃ can be provided for the tested piece, and the atmosphere such as vacuum or inert gas can be provided for the tested piece; the temperature loading is completed through the heat-conducting medium, the heat-conducting medium circularly passes through the temperature-changing cavity to carry out temperature loading on the tested piece through heat radiation, the temperature uniformity is good, and meanwhile, the control system enables the temperature fluctuation of the tested piece to be small through feedback adjustment; the invention can load the tested piece by replacing the clamp head and matching with the stretching table, such as stretching, compressing, three-point bending and the like; according to the invention, the water cooling device is arranged on the clamp, so that the influence of temperature on an external sensor can be effectively isolated; the temperature-variable environment cavity has higher integration level, is more convenient to mount and dismount with the stretching table, and is easier to replace a tested piece. The invention can obtain the information of micro deformation, texture evolution and the like of the tested piece under a neutron scattering stress spectrometer by matching with the stretching table, and has guiding significance for researching the damage mechanism of the material under the condition of variable temperature. The practicability is strong.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top cross-sectional view of the overall structure of the present invention;
FIG. 3 is a front cross-sectional view of the overall construction of the present invention;
FIG. 4 is a schematic view of a temperature change chamber of the present invention;
fig. 5 is a schematic view of the segmented clamp of the present invention.
In the figure: 1. knurling the nut; 2. a window flange plate I; 3. a front window frame; 4. a heat transfer medium inlet; 5. a neutron window I; 6. a cooling water inlet; 7. a clamp; 8. a cooling water outlet; 9. an air release port; 10. a vacuum joint; 11. a rear view window vacuum joint; 12. a rear window frame; 13. rotating the pin shaft; 14. a thermocouple; 15. locking the nut; 16. an environmental chamber; 17. a front window vacuum joint; 18. a sealing cover; 19. a heat transfer medium outlet; 20. sealing the flange plate; 21. a round nut; 22. an air inlet; 23. a vacuum gauge; 24. an auxiliary thermocouple; 25. a temperature-variable cavity; 26. a clamp connection member; 27. a clamp head; 28. a test piece; 29. a neutron window II; 30. and a window flange plate II.
Detailed Description
The details of the present invention and its embodiments are further described below with reference to the accompanying drawings.
Referring to fig. 1 to 5, the vacuum temperature-changing environment loading device for a neutron stress spectrometer of the present invention mainly provides a continuously changing temperature-changing environment and a vacuum or inert gas atmosphere for a tested piece; and the information such as microscopic deformation, texture evolution and the like of the tested piece can be obtained under a neutron scattering stress spectrometer by matching with a stretching table; the invention has the advantages of higher integration level, more convenient installation and disassembly of the stretching table and easier replacement of the tested piece. The invention mainly comprises an environment cavity assembly, a temperature changing cavity assembly, an observation window assembly and a clamp assembly. The environment cavity assembly is mainly used for keeping temperature and isolating temperature and providing a sealed environment; the temperature-changing cavity component is fixed on the environment cavity component and mainly provides temperature loading; the observation window assembly is connected with the environment cavity assembly through a rotating pin shaft 13 and provides a window for the neutron beam and the speckle camera; the clamp assembly is connected with the environment cavity assembly through a sealing ring and is used for transferring mechanical load to a tested piece.
Referring to fig. 1, the environment cavity assembly mainly comprises a knurled nut 1, an air release opening 9, a vacuum joint 10, a rotating pin 13, a thermocouple 14, a locking nut 15, an environment cavity 16, a sealing cover 18, a sealing flange 20, a round nut 21, an air inlet 22, a vacuum gauge 23 and an auxiliary thermocouple 24. The knurled nut 1 is connected with the environment cavity 16 through a pin shaft, the air release port 9, the vacuum joint 10 and the air inlet 22 are all welded on the environment cavity 16, and the rotating pin shaft 13 is installed on the environment cavity 16; the thermocouple 14 is connected with an environment cavity 16 through a locking nut 15; the sealing flange plate 20 is fixed on the environment cavity 16 through inner hexagon bolts, and the sealing cover 18 is fixed on the sealing flange plate 20 through fastening bolts; the round nut 21 is connected with the environment cavity 16 through threads; the vacuum gauge 23 is connected with an interface welded on the environment cavity 16 through threads; two auxiliary thermocouples 24 are provided, each connected to the environmental chamber 16 by a lock nut 15. The thermocouple 14 tests the ambient temperature and feeds back the ambient temperature to the control system, and the two auxiliary thermocouples 24 assist in testing the ambient temperature gradient; the vacuum pump performs vacuum pumping through the vacuum joint 10, and the vacuum degree of the environmental chamber 16 is tested through the vacuum gauge 23; inert gas is filled through the gas inlet 22 and discharged through the gas discharge port 9.
Referring to fig. 2, the observation window assembly includes a window flange i 2, a front window frame 3, a neutron window i 5, a rear window vacuum connector 11, a rear window frame 12, a front window vacuum connector 17, a neutron window ii 29, and a window flange ii 30.
The front window frame 3 and the rear window frame 12 are connected with an environment cavity 16 through a rotating pin shaft 13 and are respectively arranged in front of and behind the environment cavity 16; four uniformly distributed flange plates for fixing are welded on the rear window frame 12; the front and rear viewing window frames are respectively provided with two viewing window flange plates I2, a neutron viewing window I5, a neutron viewing window II 29 and a viewing window flange plate II 30, the neutron viewing window I5 is fixed on the viewing window frame through the viewing window flange plate I2 through fastening bolts, and the neutron viewing window II 29 is fixed on the viewing window frame through the viewing window flange plate II 30 through fastening bolts; the front window vacuum connector 17 is welded to the front window frame 3, and the rear window vacuum connector 11 is welded to the rear window frame 12. The neutron beam enters through the front window frame 3, passes through the test piece and then exits through the rear window frame 12; the double neutron windows can effectively isolate the temperature and prevent the low-temperature windows from frosting; the knurled nut 1 is screwed down to lock the front and rear window frames and the environmental cavity 16 to form a closed space; the rear window frame 12 can be fixed on the stretching table through four fixing flange plates which are uniformly distributed.
Referring to fig. 3 and 4, the temperature-changing cavity assembly mainly includes a heat-conducting medium inlet 4, a heat-conducting medium outlet 19, and a temperature-changing cavity 25. The heat-conducting medium inlet 4 and the heat-conducting medium outlet 19 are fixedly connected with the temperature-changing cavity 25 through fastening bolts and are connected with the sealing cover 18 and the sealing flange plate 20 through sealing rings; the temperature-changing cavity 25 is fixed on the environment cavity 16 through bolts. The heat-conducting medium flows circularly, flows into the temperature-variable cavity 25 through the heat-conducting medium inlet 4, and then flows out through the heat-conducting medium outlet 19, and the temperature-variable cavity 25 carries out temperature loading on the tested piece through heat radiation.
Referring to fig. 2, 3 and 5, the clamp assembly mainly includes a cooling water inlet 6, a clamp 7, a cooling water outlet 8, a clamp connector 26, a clamp head 27 and a test piece 28.
A cooling water inlet 6 and a cooling water outlet 8 are respectively welded on the clamp 7, and an annular cooling water tank is arranged on the clamp 7; the clamp 7 is connected with the environment cavity 16 through a sealing ring and a round nut 21; the clamp connecting piece 26 is fixedly connected with the clamp 7 through an inner hexagon bolt, and the clamp head 27 is connected with the clamp connecting piece 26 through a T-shaped groove; the test piece 28 is placed between the two jig heads 27. Cooling water flows into the annular cooling water tank of the clamp 7 through the cooling water inlet 6 in a circulating manner and then flows out through the cooling water outlet 8, so that the temperature of the clamp can be effectively isolated; the fixture adopts a sectional connection mode, so that the type of the fixture head 27 and the tested piece 28 can be conveniently replaced.
The clamp assembly adopts a sectional connection mode, so that the type of the clamp head 27 and the tested piece 28 can be conveniently replaced.
Example (b):
the vacuum variable-temperature environment loading device for the neutron stress spectrometer can be fixed on a stretching table through four uniformly distributed fixing flange plates on a rear window frame 12, and meanwhile, the flange plate of a clamp 7 is connected with the stretching table; inputting the heat-conducting medium from the heat-conducting medium inlet 4 and outputting the heat-conducting medium from the heat-conducting medium outlet 19; cooling water flows into the annular cooling water tank of the clamp 7 through the cooling water inlet 6 and flows out from the cooling water outlet 8; connecting a vacuum pump with a vacuum joint 10, a rear window vacuum joint 11 and a front window vacuum joint 17; an inert gas device is connected with the air relief port 9 and the air inlet port 22.
During testing, firstly loosening the knurled nut 1, opening the front window frame 3, selecting the type of the clamp head 27 and the tested piece 28 according to the test type, mounting the clamp head and the tested piece on the clamp connecting piece 26, then closing the front window frame 3, and locking the knurled nut 1; after the tested piece 28 is installed, the vacuum pump is started to vacuumize, if an inert gas atmosphere is needed, the inert gas device can be started, cooling water circulation is started, heat conducting medium circulation is started, the temperature of the tested piece 28 is set, the stretching table is controlled to mechanically load the tested piece 28 after the set temperature is reached, and the tested piece 28 is subjected to in-situ observation through a neutron scattering stress spectrometer in the loading process. After the test is finished, the vacuum is firstly released, then the knurled nut 1 is loosened, the front window frame 3 is opened, the clamp head 27 and the tested piece 28 are taken down, the front window frame 3 is closed, and the test is finished.
The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like of the present invention shall be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a vacuum alternating temperature environment loading device for neutron stress spectrometer which characterized in that: the device comprises an environment cavity component, a variable temperature cavity component, an observation window component and a clamp component, wherein the variable temperature cavity component is fixed on the environment cavity component; the observation window assembly is connected with the environment cavity assembly through a rotating pin shaft (13); the clamp assembly is connected with the environment cavity assembly through a sealing ring.
2. The vacuum temperature changing environment loading device for a neutron stress spectrometer of claim 1, wherein: the environment cavity component is as follows: the knurled nut (1) is connected with the environment cavity (16) through a pin shaft, the air release port (9), the vacuum joint (10) and the air inlet (22) are all welded on the environment cavity (16), and the rotating pin shaft (13) is installed on the environment cavity (16); the thermocouple (14) is connected with the environment cavity (16) through a locking nut (15); the sealing flange (20) is fixed on the environment cavity (16), and the sealing cover (18) is fixed on the sealing flange (20); the round nut (21) is in threaded connection with the environment cavity (16); the vacuum gauge (23) is connected with an interface welded on the environment cavity (16) through threads; two auxiliary thermocouples (24) are arranged and are connected with the environment cavity (16) through locking nuts (15).
3. The vacuum temperature changing environment loading device for a neutron stress spectrometer of claim 1, wherein: the observation window assembly is as follows: the front window frame (3) and the rear window frame (12) are connected with the environment cavity (16) through a rotating pin shaft (13) and are respectively arranged in front of and behind the environment cavity (16); four uniformly distributed flange plates for fixing are welded on the rear window frame (12); the front and rear viewing window frames are respectively provided with two viewing window flange plates I (2), a neutron viewing window I (5), a neutron viewing window II (29) and a viewing window flange plate II (30), the neutron viewing window I (5) is fixed on the viewing window frames by the viewing window flange plates I (2) through fastening bolts, and the neutron viewing window II (29) is fixed on the viewing window frames by the viewing window flange plates II (30) through fastening bolts; the front window vacuum joint (17) is welded on the front window frame (3), and the rear window vacuum joint (11) is welded on the rear window frame (12); the knurled nut (1) locks the front and rear window frames and the environmental cavity (16) to form a closed space.
4. The vacuum temperature changing environment loading device for a neutron stress spectrometer of claim 1, wherein: the temperature-changing cavity component comprises: the heat-conducting medium inlet (4) and the heat-conducting medium outlet (19) are fixedly connected with the temperature-variable cavity (25) through fastening bolts and are connected with the sealing cover (18) and the sealing flange plate (20) through sealing rings; the temperature-variable cavity (25) is fixed on the environment cavity (16) through bolts.
5. The vacuum temperature changing environment loading device for a neutron stress spectrometer of claim 1, wherein: the clamp assembly is as follows: a cooling water inlet (6) and a cooling water outlet (8) are respectively welded on the clamp (7), and an annular cooling water tank is arranged on the clamp (7); the clamp (7) is connected with the environment cavity (16) through a sealing ring and a round nut (21); the clamp connecting piece (26) is fixedly connected with the clamp (7) through an inner hexagon bolt, and the clamp head (27) is connected with the clamp connecting piece (26) through a T-shaped groove; the test piece (28) is placed between two jig heads (27).
6. The vacuum temperature changing environment loading device for a neutron stress spectrometer of claim 5, wherein: the clamp assembly adopts a sectional connection mode, so that the type of the clamp head (27) and the tested piece (28) can be conveniently replaced.
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| CN201911341672.8A CN111122342A (en) | 2019-12-24 | 2019-12-24 | Vacuum temperature-changing environment loading device for neutron stress spectrometer |
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| CN201911341672.8A CN111122342A (en) | 2019-12-24 | 2019-12-24 | Vacuum temperature-changing environment loading device for neutron stress spectrometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051167A (en) * | 2020-08-28 | 2020-12-08 | 吉林大学 | High/low temperature complex atmosphere environment loading device |
| CN116465914A (en) * | 2023-05-08 | 2023-07-21 | 天津大学 | Four-degree-of-freedom high-temperature vacuum environment box used under neutron diffraction condition |
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