CN107817067A - A kind of large cavity high/low temperature loading device for neutron stress measurement - Google Patents
A kind of large cavity high/low temperature loading device for neutron stress measurement Download PDFInfo
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- CN107817067A CN107817067A CN201711284424.5A CN201711284424A CN107817067A CN 107817067 A CN107817067 A CN 107817067A CN 201711284424 A CN201711284424 A CN 201711284424A CN 107817067 A CN107817067 A CN 107817067A
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- cold
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- cold screen
- sealing flange
- top plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/25—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/26—Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a kind of large cavity high/low temperature loading device for neutron stress measurement, upper sealing flange, lower sealing flange in described device are separately mounted to the upper end of vacuum cover body, lower end, form a cylindric seal cavity；Described cold screen top plate, cold screen substrate are separately fixed at cold screen upper end, lower end, form a cylindric heat radiation shield；Described upper fixed specimen holder is fixed on cold screen top plate, and lower fixed specimen holder is fixed on cold screen substrate, sample is placed on inside heat radiation shield；Described refrigeration machine is fixed on sealing flange, the cold head of refrigeration machine is placed in inside seal cavity；The pharoid is placed in inside heat radiation shield, is fixed on cold screen top plate；The measurement end of described RTD is attached to sample surface.The present invention is simple in construction, and reliability is high.
Description
Technical field
A kind of neutron diffraction in-situ temperature loading device in being applied the present invention relates to neutron diffraction stress measurement, is specifically related to
A kind of and large cavity high/low temperature loading device for neutron stress measurement.
Background technology
Large cavity high/low temperature loading device for neutron stress measurement coordinates neutron stress spectrometer to use, available for measuring
The parts such as aviation wing, engine, high-speed railway rail stress distribution situation at a temperature of usage, to component materials selection, processing work
Skill etc. plays directive function.The usage temperature range of these parts is generally subzero tens degree to 100 degree or so.Pass through
Change the environment temperature of unit under test, recycle the stress distribution of neutron stress spectrometer measuring part, can obtain unit under test should
Power is distributed the mechanism that is acted upon by temperature changes.To obtain fine stress envelope, a part needs measurement tens even
Individual diverse locations up to a hundred, the time-consuming time that can reach two, three days.The conventional high/low temperature loading device of the temperature section is often used and made
The liquid nitrogen of valency economy is exposed in ambient air as refrigeration source, unit under test, long time loading（One hour or so）Tested portion
Part surface can condense a large amount of frosts.Neutron is excessively poor to the penetrability of water, therefore the liquid nitrogen type of cooling is unsatisfactory for neutron scattering survey
The loading requirement of amount experiment.At present, not yet it is related to neutron in domestic document or report on neutron scattering in situ environment device
The correlation technique content of diffraction in-situ low temperature loading.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of large cavity high/low temperature for neutron stress measurement to load dress
Put.The present invention can provide high and low temperature environment for component-level sample, and the structure design of device allows neutron spectrometer to part sample
360 ° of comprehensive stress measurement is carried out, while ensures that sample is not in the problem of condensing frost in low temperature loading procedure.
The large cavity high/low temperature loading device for neutron stress measurement of the present invention, is characterized in, the loading device
Including seal cavity, heat radiation shield, specimen holder, refrigeration machine, pharoid, RTD, vavuum pump and cold conductive members；
Described seal cavity includes upper sealing flange, lower sealing flange, vacuum cover body；Described heat radiation shield includes cold screen top
Plate, cold screen substrate, cold screen；Described specimen holder includes upper fixed specimen holder, lower fixed specimen holder；Described cold conductive members
Including conduction cold chain, bellows, cold chain lifting rod, wherein, the vacuum that described upper sealing flange is provided with connection vavuum pump is taken out
Mouth and connection pharoid, the electric interfaces of RTD.
Its annexation is：Described upper sealing flange, lower sealing flange be separately mounted to vacuum cover body upper end, under
End, form a cylindric seal cavity；Described cold screen top plate, cold screen substrate are separately fixed at cold screen upper end, lower end, group
The heat radiation shield cylindric into one；Using heat-insulating material respectively by cold screen top plate, cold screen substrate be fixed on upper sealing flange,
On lower sealing flange, heat radiation shield is set to be placed in the inside of seal cavity；Described upper fixed specimen holder is fixed on cold screen top plate
On, lower fixed specimen holder is fixed on cold screen substrate, sample is placed on inside heat radiation shield；Described refrigeration machine is fixed on
On upper sealing flange, the cold head of refrigeration machine is set to be placed in inside seal cavity；The pharoid is placed in inside heat radiation shield,
It is fixed on cold screen top plate；The measurement end of described RTD is attached to sample surface；Described pharoid, RTD
Cable be connected to sealing flange setting electric interfaces on；Described vavuum pump is connected to upper sealing flange by vacuum tube
Vacuum pumping port on；Described cold chain lifting rod is fixed on upper sealing flange using bellows, described conduction cold chain one end
On the cold head for connecting refrigeration machine, the other end is connected on cold chain lifting rod, drive of the described conduction cold chain in cold chain lifting rod
Under can with cold screen top plate be in close contact or depart from.
Described vacuum cover body carries out overall processing using forging thick section and high strength aluminium-alloy pipe.
Described cold screen top plate, cold screen substrate selection high thermal conductivity metal material, inner surface are carried out at black anodizing
Reason.
The cold screen selection high-strength aluminum alloy material, inner surface carry out black anodizing processing.
Described refrigeration machine is liquid helium closed loop type refrigeration machine；
Described conduction cold chain is the flexible metallic material of high thermal conductivity materials.
Described cold chain lifting rod is pneumatic pull-type, and cold chain lifting rod drives conduction cold chain to be pressed onto Leng Pingding during inflation
The surface of plate, cold chain lifting rod drives conduction cold chain to depart from cold screen top plate when dying.
The course of work of described device is：
1）The air with water composition in seal cavity is extracted out using vavuum pump, ensures anhydrous, the non-oxidation of sample environment.
2）When carrying out refrigerating operation for sample, the cylinder valve of cold chain lifting rod is first turned on, cylinder is inflated, it is cold
Chain lifting rod, which drives, conducts the surface that cold chain is pressed onto cold screen top plate；Then, start liquid helium closed loop type refrigeration machine to carry for sample
Cooling source, during sample not in contact with to steam, therefore, the sample of low-temperature condition shows to be not in icing, frost.
3）When carrying out heating operation for sample, the cylinder valve of cold chain lifting rod is first shut off, cylinder is died, it is cold
Chain lifting rod drives conduction cold chain to depart from cold screen top plate, then controls the loading current of heating plate, sample is heated；
The large cavity high/low temperature loading device for neutron stress measurement of the present invention, has simple in construction, dependable performance spy
Point.Device using closed cavity body structure and liquid helium closed loop refrigeration modes so that sample is all the time in anaerobic, anhydrous true
Dummy status, is not in icing, frost during refrigeration, is not in sample oxidation problem during heating, ensures that neutron
The smooth development of measurement experiment.The vacuum cover body of device uses the high-strength aluminum alloy material and forging heavy wall of neutron high transmittance
The processing mode of pipe, cover body wall thickness is reduced on the premise of it can bear inside and outside atmospheric pressure, so as to ensure that vacuum cover body
Neutron high transmittance, meanwhile, coordinate the sample stage with spinfunction, the comprehensive stress that 360 ° of part sample can be achieved is surveyed
Amount.The present invention is applied to the component-level samples such as aviation wing, engine, high-speed railway rail, disclosure satisfy that component-level sample in usage
At a temperature of stress distribution measurement demand, so as to play directive function to component materials selection, processing technology etc., have higher
Scientific research value and good application prospect.
Brief description of the drawings
Fig. 1 is the structural representation of the large cavity high/low temperature loading device for neutron stress measurement of the present invention；
Fig. 2 is the sectional view of the large cavity high/low temperature loading device for neutron stress measurement of the present invention；
Fig. 3 is the large cavity high/low temperature loading device top view for neutron stress measurement of the present invention；
In figure, 2. times sealing flanges of sealing flange, 3. vacuum cover body, the 4. cold cold screen substrate 6. of screen top plate 5. on 1.
8. times RTDs of 10. pharoid of fixed 9. refrigeration machine of specimen holder 11. of specimen holder are fixed on cold screen 7.
12. vavuum pump 13. conducts the cold chain lifting rod of 14. bellows of cold chain 15..
Embodiment
The detailed content and its embodiment of the present invention is further illustrated below in conjunction with the accompanying drawings.
Embodiment 1
Fig. 1 to Fig. 3 is respectively the structural representation, sectional view and top view of the present embodiment, and the neutron stress that is used for of the invention is surveyed
The large cavity high/low temperature loading device of amount include seal cavity, heat radiation shield, specimen holder, refrigeration machine 9, pharoid 10,
RTD 11, vavuum pump 12 and cold conductive members；Described seal cavity includes upper sealing flange 1, lower sealing flange 2, true
Empty cover body 3；Described heat radiation shield includes cold screen top plate 4, cold screen substrate 5, cold screen 6；Described specimen holder includes upper fixation
Specimen holder 7, lower fixed specimen holder 8；Described cold conductive members include conduction cold chain 13, bellows 14, cold chain lifting rod 15.
Wherein, described upper sealing flange 1 is provided with the vacuum pumping port and connection pharoid 10, RTD 11 of connection vavuum pump 12
Electric interfaces.
Described upper sealing flange 1, lower sealing flange 2 are separately mounted to the upper end of vacuum cover body 3, lower end, form one
Cylindric seal cavity；Described cold screen top plate 4, cold screen substrate 5 are separately fixed at the cold upper end of screen 6, lower end, form a circle
The heat radiation shield of tubular；Using heat-insulating material respectively by cold screen top plate 4, cold screen substrate 5 be fixed on upper sealing flange 1, under it is close
Seal on flange 2, heat radiation shield is placed in the inside of seal cavity；Described upper fixed specimen holder 7 is fixed on cold screen top plate 4
On, lower fixed specimen holder 8 is fixed on cold screen substrate 5, sample is placed on inside heat radiation shield；Described refrigeration machine 9 is solid
It is scheduled on sealing flange 1, the cold head of refrigeration machine 9 is placed in inside seal cavity；The pharoid 10 is placed in heat spoke
Penetrate inside cover, be fixed on cold screen top plate 4；The measurement end of described RTD 11 is attached to sample surface；Described radiation
Heater 10, the cable of RTD 11 are connected on the electric interfaces of the setting of sealing flange 1；Described vavuum pump 12 is by true
Blank pipe is connected on the vacuum pumping port of sealing flange 1；Described cold chain lifting rod 15 is fixed on upper sealing using bellows 14
On flange 1, on the cold head of described conduction cold chain 13 one end connection refrigeration machine 9, the other end is connected on cold chain lifting rod 15, institute
The conduction cold chain 13 stated can be in close contact or depart from cold screen top plate 4 under the drive of cold chain lifting rod 15.
Described vacuum cover body 3 carries out overall processing using forging thick section and high strength aluminium-alloy pipe.
Described cold screen top plate 4, cold screen substrate 5 select high thermal conductivity metal material, and inner surface carries out black anodizing
Processing.
The cold screen 6 selects high-strength aluminum alloy material, and inner surface carries out black anodizing processing.
Described refrigeration machine 9 is liquid helium closed loop type refrigeration machine；
Described conduction cold chain 13 is the flexible metallic material of high thermal conductivity materials.
Described cold chain lifting rod 15 is pneumatic pull-type, and cold chain lifting rod 15 drives conduction cold chain 13 to be pressed onto during inflation
The surface of cold screen top plate 4, cold chain lifting rod 15 drives conduction cold chain 13 to depart from cold screen top plate 4 when dying.
In the present embodiment, upper sealing flange, lower sealing flange select stainless steel material, and vacuum cover body uses 7050 aviation aluminium
Alloy material, appearance and size are diameter 600mm, height 700mm, wall thickness 4mm；Cold screen top plate, cold screen substrate select copper alloy material
Matter, cold screen material selection aluminum alloy materials, appearance and size are diameter 575mm, height 550mm, wall thickness 2.5mm；Liquid helium closed loop
The refrigeration work consumption of type refrigeration machine is 200w.After above-mentioned implementation, the present invention can be to the circle within diameter 500mm, height 500mm
Post, the part sample of annulus equidimension rank carry out the high/low temperature loading of neutron diffraction original position.
Embodiment 2
The present embodiment is identical with the structure of embodiment 1, and the appearance and size for being a difference in that vacuum cover body is diameter 400mm, height
600mm, wall thickness 3mm；Cold screen top plate, cold screen substrate, cold screen select aluminum alloy materials, the appearance and size of cold screen is diameter 375mm,
Height 350mm, wall thickness 2.5mm；The refrigeration work consumption of liquid helium closed loop type refrigeration machine is 150w.
The present invention can be carried out to the part sample of the cylinder within diameter 300mm, height 300mm, annulus equidimension rank
The high/low temperature loading of neutron diffraction original position.
Claims (7)
1. a kind of large cavity high/low temperature loading device for neutron stress measurement, it is characterised in that the loading device includes
Seal cavity, heat radiation shield, specimen holder, refrigeration machine（9）, pharoid（10）, RTD（11）, vavuum pump（12）With it is cold
Measure conductive members；Described seal cavity includes upper sealing flange（1）, lower sealing flange（2）, vacuum cover body（3）；Described heat
Amount radiation shield includes cold screen top plate（4）, cold screen substrate（5）, cold screen（6）；Described specimen holder includes upper fixed specimen holder（7）、
Lower fixed specimen holder（8）；Described cold conductive members include conduction cold chain（13）, bellows（14）, cold chain lifting rod（15）,
Wherein, described upper sealing flange（1）It is provided with connection vavuum pump（12）Vacuum pumping port and connection pharoid（10）, platinum
Resistance（11）Electric interfaces；Its annexation is：Described upper sealing flange（1）, lower sealing flange（2）It is separately mounted to true
Empty cover body（3）Upper end, lower end, form a cylindric seal cavity；Described cold screen top plate（4）, cold screen substrate（5）Point
Cold screen is not fixed on（6）Upper end, lower end, form a cylindric heat radiation shield；Using heat-insulating material respectively by cold screen top
Plate（4）, cold screen substrate（5）It is fixed on sealing flange（1）, lower sealing flange（2）On, heat radiation shield is placed in seal cavity
Inside；Described upper fixed specimen holder（7）It is fixed on cold screen top plate（4）On, lower fixed specimen holder（8）It is fixed on cold screen substrate
（5）On, sample is placed on inside heat radiation shield；Described refrigeration machine（9）It is fixed on sealing flange（1）On, make refrigeration
Machine（9）Cold head be placed in inside seal cavity；The pharoid（10）It is placed in inside heat radiation shield, is fixed on Leng Pingding
Plate（4）On；Described RTD（11）Measurement end be attached to sample surface；Described pharoid（10）, RTD
（11）Cable be connected to sealing flange（1）On the electric interfaces of setting；Described vavuum pump（12）Connected by vacuum tube
To upper sealing flange（1）Vacuum pumping port on；Described cold chain lifting rod（15）Utilize bellows（14）It is fixed on Sealing Method
It is blue（1）On, described conduction cold chain（13）One end connects refrigeration machine（9）Cold head on, the other end is connected to cold chain lifting rod
（15）On, described conduction cold chain（13）In cold chain lifting rod（15）Drive under can be with cold screen top plate（4）It is in close contact or de-
From.
2. the large cavity high/low temperature loading device according to claim 1 for neutron stress measurement, it is characterised in that：Institute
The vacuum cover body stated（3）Overall processing is carried out using forging thick section and high strength aluminium-alloy pipe to be made.
3. the large cavity high/low temperature loading device according to claim 1 for neutron stress measurement, it is characterised in that：Institute
The cold screen top plate stated（4）, cold screen substrate（5）High thermal conductivity metal material is selected, inner surface carries out black anodizing processing.
4. the large cavity high/low temperature loading device according to claim 1 for neutron stress measurement, it is characterised in that：Institute
State cold screen（6）High-strength aluminum alloy material is selected, inner surface carries out black anodizing processing.
5. the large cavity high/low temperature loading device according to claim 1 for neutron stress measurement, it is characterised in that：Institute
The refrigeration machine stated（9）For liquid helium closed loop type refrigeration machine.
6. the large cavity high/low temperature loading device according to claim 1 for neutron stress measurement, it is characterised in that：Institute
The conduction cold chain stated（13）For the flexible metallic material of high thermal conductivity.
7. the large cavity high/low temperature loading device according to claim 1 for neutron stress measurement, it is characterised in that：Institute
The cold chain lifting rod stated（15）For pneumatic pull-type, cold chain lifting rod during inflation（15）Drive conduction cold chain（13）It is pressed onto cold screen
Top plate（4）Surface, cold chain lifting rod when dying（15）Drive conduction cold chain（13）Depart from cold screen top plate（4）.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711284424.5A CN107817067B (en) | 2017-12-07 | 2017-12-07 | Large-cavity high-low temperature loading device for neutron stress measurement |
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| CN201711284424.5A CN107817067B (en) | 2017-12-07 | 2017-12-07 | Large-cavity high-low temperature loading device for neutron stress measurement |
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| CN107817067A true CN107817067A (en) | 2018-03-20 |
| CN107817067B CN107817067B (en) | 2023-10-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030232A (en) * | 2018-08-14 | 2018-12-18 | 兰州大学 | Neutron scattering cryogenic tensile Dewar |
| CN113284781A (en) * | 2021-06-18 | 2021-08-20 | 深圳市福田区南科大量子技术与工程研究院 | Cold table for cryoelectron microscope |
| CN115047017A (en) * | 2022-06-29 | 2022-09-13 | 中国工程物理研究院核物理与化学研究所 | Inflatable high-temperature loading device for in-situ neutron diffraction experiment |
| CN117387816A (en) * | 2023-10-18 | 2024-01-12 | 中国原子能科学研究院 | Temperature adjusting device and neutron diffraction residual stress measuring system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202677222U (en) * | 2012-05-30 | 2013-01-16 | 中国科学院西安光学精密机械研究所 | Precise thermal control mechanism of focal plane detector |
| CN202993652U (en) * | 2012-09-29 | 2013-06-12 | 中国东方电气集团有限公司 | Refrigerating system of superconducting motor based on conduction cooling |
| CN104534716A (en) * | 2014-08-15 | 2015-04-22 | 中国科学院上海技术物理研究所 | Structure for cooling high temperature superconducting filter of linear pulse tube refrigerator and production method thereof |
| CN104848718A (en) * | 2015-04-28 | 2015-08-19 | 中国科学院理化技术研究所 | Precooling device of low-temperature pulsating heat pipe and test system comprising same |
| CN106841254A (en) * | 2017-01-06 | 2017-06-13 | 中国工程物理研究院核物理与化学研究所 | A kind of temperature loading device for neutron scattering experiment |
| CN207528376U (en) * | 2017-12-07 | 2018-06-22 | 中国工程物理研究院核物理与化学研究所 | A kind of large cavity high/low temperature loading device for neutron stress measurement |
-
2017
- 2017-12-07 CN CN201711284424.5A patent/CN107817067B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202677222U (en) * | 2012-05-30 | 2013-01-16 | 中国科学院西安光学精密机械研究所 | Precise thermal control mechanism of focal plane detector |
| CN202993652U (en) * | 2012-09-29 | 2013-06-12 | 中国东方电气集团有限公司 | Refrigerating system of superconducting motor based on conduction cooling |
| CN104534716A (en) * | 2014-08-15 | 2015-04-22 | 中国科学院上海技术物理研究所 | Structure for cooling high temperature superconducting filter of linear pulse tube refrigerator and production method thereof |
| CN104848718A (en) * | 2015-04-28 | 2015-08-19 | 中国科学院理化技术研究所 | Precooling device of low-temperature pulsating heat pipe and test system comprising same |
| CN106841254A (en) * | 2017-01-06 | 2017-06-13 | 中国工程物理研究院核物理与化学研究所 | A kind of temperature loading device for neutron scattering experiment |
| CN207528376U (en) * | 2017-12-07 | 2018-06-22 | 中国工程物理研究院核物理与化学研究所 | A kind of large cavity high/low temperature loading device for neutron stress measurement |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030232A (en) * | 2018-08-14 | 2018-12-18 | 兰州大学 | Neutron scattering cryogenic tensile Dewar |
| CN113284781A (en) * | 2021-06-18 | 2021-08-20 | 深圳市福田区南科大量子技术与工程研究院 | Cold table for cryoelectron microscope |
| CN115047017A (en) * | 2022-06-29 | 2022-09-13 | 中国工程物理研究院核物理与化学研究所 | Inflatable high-temperature loading device for in-situ neutron diffraction experiment |
| CN117387816A (en) * | 2023-10-18 | 2024-01-12 | 中国原子能科学研究院 | Temperature adjusting device and neutron diffraction residual stress measuring system |
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| CN107817067B (en) | 2023-10-20 |
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