CN207528376U - 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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- CN207528376U CN207528376U CN201721689181.9U CN201721689181U CN207528376U CN 207528376 U CN207528376 U CN 207528376U CN 201721689181 U CN201721689181 U CN 201721689181U CN 207528376 U CN207528376 U CN 207528376U
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Abstract
The utility model provides a kind of large cavity high/low temperature loading device for neutron stress measurement, and the upper sealing flange, lower sealing flange in the device are separately mounted to the upper end of vacuum cover body, lower end, form a cylindric seal cavity；The cold screen top plate, cold screen substrate are separately fixed at cold screen upper end, lower end, form a cylindric heat radiation shield；The upper fixed specimen holder is fixed on cold screen top plate, and lower fixed specimen holder is fixed on cold screen substrate, and sample is made to be placed on inside heat radiation shield；The refrigeration machine is fixed on sealing flange, and the cold head of refrigeration machine is made to be 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 the platinum resistance is attached to sample surface.The utility model is simple in structure, and reliability is high.
Description
Technical field
A kind of neutron diffraction in-situ temperature loading device in being applied the utility model is related to neutron diffraction stress measurement, tool
Body is related to a kind of large cavity high/low temperature loading device for neutron stress measurement.
Background technology
It is used for the large cavity high/low temperature loading device cooperation neutron stress spectrometer of neutron stress measurement, available for measuring
The components 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 components 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 component needs to measure tens even
A different 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 is made
The liquid nitrogen of valency economy is exposed to as refrigeration source, unit under test in ambient air, 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 about neutron scattering in situ environment device
The relevant technologies content of diffraction in-situ low temperature loading.
Invention content
The technical problem to be solved by the present invention is to provide a kind of large cavity high/low temperatures for neutron stress measurement to add
It carries and puts.The utility model can provide high and low temperature environment for component-level sample, and the structure design of device allows neutron spectrometer pair
Component sample carries out 360 ° of comprehensive stress measurement, while ensures that sample is not in condensation frost in low temperature loading procedure
Problem.
The large cavity high/low temperature loading device for neutron stress measurement of the utility model, its main feature is that, the loading
Device includes seal cavity, heat radiation shield, specimen holder, refrigeration machine, pharoid, platinum resistance, vacuum pump and cold conduction
Component；The seal cavity includes upper sealing flange, lower sealing flange, vacuum cover body；The heat radiation shield includes cold
Shield top plate, cold screen substrate, cold screen；The specimen holder includes upper fixed specimen holder, lower fixed specimen holder；The cold conduction
Component includes conduction cold chain, bellows, cold chain lifting rod, wherein, the upper sealing flange is provided with the true of connection vacuum pump
Sky takes out mouth and connection pharoid, the electric interfaces of platinum resistance.
Its connection relation is：The upper sealing flange, lower sealing flange be separately mounted to vacuum cover body upper end, under
End forms a cylindric seal cavity；The 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 made to be placed in the inside of seal cavity；The upper fixed specimen holder is fixed on cold screen top plate
On, lower fixed specimen holder is fixed on cold screen substrate, and sample is made to be placed on inside heat radiation shield；The refrigeration machine is fixed on
On upper sealing flange, the cold head of refrigeration machine is made 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 the platinum resistance is attached to sample surface；The pharoid, platinum resistance
Cable be connected to sealing flange setting electric interfaces on；The vacuum pump is connected to upper sealing flange by vacuum tube
Vacuum pumping port on；The cold chain lifting rod is fixed on using bellows on upper sealing flange, described conduction cold chain one end
On the cold head for connecting refrigeration machine, the other end is connected on cold chain lifting rod, and the conduction cold chain is in the drive of cold chain lifting rod
Under can with cold screen top plate be in close contact or be detached from.
The vacuum cover body carries out overall processing using forging thick section and high strength aluminium-alloy pipe.
The 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.
The refrigeration machine is liquid helium closed loop type refrigeration machine；
The conduction cold chain is the flexible metallic material of high thermal conductivity materials.
The 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 be detached 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 vacuum pump, ensures anhydrous, the nothing of sample environment
Oxidation.
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
For low-temperature receiver, sample is not in contact with to steam in the process, and 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, is died to cylinder, it is cold
Chain lifting rod drives conduction cold chain to be detached 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 utility model has simple in structure, performance
The characteristics of reliable.Device using closed cavity body structure and liquid helium closed loop refrigeration modes so that sample always in anaerobic,
Anhydrous vacuum state, when refrigeration are not in icing, frost, and when heating is not in sample oxidation problem, so as to really
The smooth development of neutron measurement experiment is protected.The vacuum cover body of device using neutron high transmittance high-strength aluminum alloy material and
The processing method of forging thick-walled pipe reduces cover body wall thickness under the premise of it can bear inside and outside atmospheric pressure, true so as to ensure that
The neutron high transmittance of empty cover body, meanwhile, cooperation with spinfunction sample stage, it can be achieved that 360 ° of component sample it is comprehensive
Stress measurement.The utility model is suitable for the component-levels samples such as aviation wing, engine, high-speed railway rail, disclosure satisfy that component-level
Sample stress distribution measurement demand at a temperature of usage is made so as to play guidance to component materials selection, processing technology etc.
With with higher scientific research value and good application prospect.
Description of the drawings
Fig. 1 is the structure diagram of the large cavity high/low temperature loading device for neutron stress measurement of the utility model；
Fig. 2 is the sectional view of the large cavity high/low temperature loading device for neutron stress measurement of the utility model；
Fig. 3 is the large cavity high/low temperature loading device vertical view for neutron stress measurement of the utility model；
In figure, 2. times sealing flanges of sealing flange, 3. vacuum cover body, 4. cold 5. cold screen substrate of screen top plate on 1.
6. 8. times 10. pharoid of fixed 9. refrigeration machine of specimen holder, 11. platinum of specimen holder are fixed on cold screen 7.
12. vacuum pump 13. of resistance conduction cold chain, 14. bellows, 15. cold chain lifting rod.
Specific embodiment
The detailed content and its specific embodiment of the utility model are further illustrated below in conjunction with the accompanying drawings.
Embodiment 1
Fig. 1 to Fig. 3 is respectively the structure diagram, sectional view and vertical view of the present embodiment, in being used for of the utility model
The large cavity high/low temperature loading device of sub- stress measurement adds including seal cavity, heat radiation shield, specimen holder, refrigeration machine 9, radiation
Hot device 10, platinum resistance 11, vacuum pump 12 and cold conductive members；The seal cavity includes upper sealing flange 1, lower Sealing Method
Orchid 2, vacuum cover body 3；The heat radiation shield includes cold screen top plate 4, cold screen substrate 5, cold screen 6；The specimen holder includes
Upper fixed specimen holder 7, lower fixed specimen holder 8；The cold conductive members include conduction cold chain 13, bellows 14, cold chain and carry
Pull rod 15.Wherein, the upper sealing flange 1 be provided with connection vacuum pump 12 vacuum pumping port and connection pharoid 10,
The electric interfaces of platinum resistance 11.
The 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；The cold screen top plate 4, cold screen substrate 5 are separately fixed at cold 6 upper end of screen, 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
It seals on flange 2, heat radiation shield is made to be placed in the inside of seal cavity；The 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, and sample is made to be placed on inside heat radiation shield；The refrigeration machine 9 is solid
It is scheduled on sealing flange 1, the cold head of refrigeration machine 9 is made to be placed in inside seal cavity；The pharoid 10 is placed in heat spoke
It penetrates inside cover, is fixed on cold screen top plate 4；The measurement end of the platinum resistance 11 is attached to sample surface；The radiation
Heater 10, platinum resistance 11 cable be connected to sealing flange 1 setting electric interfaces on；The vacuum pump 12 is by true
Blank pipe is connected on the vacuum pumping port of sealing flange 1；The cold chain lifting rod 15 is fixed on upper sealing using bellows 14
On flange 1, on the cold head of 13 one end of conduction cold chain 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 be detached from cold screen top plate 4 under the drive of cold chain lifting rod 15.
The vacuum cover body 3 carries out overall processing using forging thick section and high strength aluminium-alloy pipe.
The 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.
The refrigeration machine 9 is liquid helium closed loop type refrigeration machine；
The conduction cold chain 13 is the flexible metallic material of high thermal conductivity materials.
The 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 be detached 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 is 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 is 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, within the utility model can be to diameter 500mm, height 500mm
Cylinder, annulus equidimension rank component sample 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, be a difference in that the appearance and size of vacuum cover body for diameter 400mm,
Height 600mm, wall thickness 3mm；Cold screen top plate, cold screen substrate, cold screen select aluminum alloy materials, and 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 utility model can be to cylinder, the component sample of annulus equidimension rank within diameter 300mm, height 300mm
Carry out the high/low temperature loading of neutron diffraction original position.
Claims (4)
1. a kind of large cavity high/low temperature loading device for neutron stress measurement, which is characterized in that the loading device includes
Seal cavity, heat radiation shield, specimen holder, refrigeration machine（9）, pharoid（10）, platinum resistance（11）, vacuum pump（12）With it is cold
Measure conductive members；The seal cavity includes upper sealing flange（1）, lower sealing flange（2）, vacuum cover body（3）；The heat
It measures radiation shield and includes cold screen top plate（4）, cold screen substrate（5）, cold screen（6）；The specimen holder includes upper fixed specimen holder（7）、
Lower fixed specimen holder（8）；The cold conductive members include conduction cold chain（13）, bellows（14）, cold chain lifting rod（15）,
Wherein, the upper sealing flange（1）It is provided with connection vacuum pump（12）Vacuum pumping port and connection pharoid（10）, platinum
Resistance（11）Electric interfaces；Its connection relation is：The 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；The cold screen top plate（4）, cold screen substrate（5）Point
It is not fixed on cold screen（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 made to be placed in seal cavity
Inside；The 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 made to be placed on inside heat radiation shield；The 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；The platinum resistance（11）Measurement end be attached to sample surface；The pharoid（10）, platinum resistance
（11）Cable be connected to sealing flange（1）On the electric interfaces of setting；The vacuum pump（12）It is connected by vacuum tube
To upper sealing flange（1）Vacuum pumping port on；The cold chain lifting rod（15）Utilize bellows（14）It is fixed on Sealing Method
It is blue（1）On, the 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, the 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 refrigeration machine stated（9）For liquid helium closed loop type refrigeration machine.
4. 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）It is detached from cold screen top plate（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721689181.9U CN207528376U (en) | 2017-12-07 | 2017-12-07 | A kind of large cavity high/low temperature loading device for neutron stress measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721689181.9U CN207528376U (en) | 2017-12-07 | 2017-12-07 | A kind of large cavity high/low temperature loading device for neutron stress measurement |
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| Publication Number | Publication Date |
|---|---|
| CN207528376U true CN207528376U (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721689181.9U Expired - Fee Related CN207528376U (en) | 2017-12-07 | 2017-12-07 | A kind of large cavity high/low temperature loading device for neutron stress measurement |
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| Country | Link |
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| CN (1) | CN207528376U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817067A (en) * | 2017-12-07 | 2018-03-20 | 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 |
| CN111122342A (en) * | 2019-12-24 | 2020-05-08 | 吉林大学 | Vacuum temperature-changing environment loading device for neutron stress spectrometer |
-
2017
- 2017-12-07 CN CN201721689181.9U patent/CN207528376U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817067A (en) * | 2017-12-07 | 2018-03-20 | 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 |
| CN107817067B (en) * | 2017-12-07 | 2023-10-20 | 中国工程物理研究院核物理与化学研究所 | Large-cavity high-low temperature loading device for neutron stress measurement |
| CN111122342A (en) * | 2019-12-24 | 2020-05-08 | 吉林大学 | Vacuum temperature-changing environment loading device for neutron stress spectrometer |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180622 Termination date: 20191207 |