CN102166538A - Device for providing low-temperature environment - Google Patents
Device for providing low-temperature environment Download PDFInfo
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- CN102166538A CN102166538A CN2011101185177A CN201110118517A CN102166538A CN 102166538 A CN102166538 A CN 102166538A CN 2011101185177 A CN2011101185177 A CN 2011101185177A CN 201110118517 A CN201110118517 A CN 201110118517A CN 102166538 A CN102166538 A CN 102166538A
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- liquid nitrogen
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- temperature environment
- low temperature
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Abstract
The invention discloses a device for providing a low-temperature environment, comprising a liquid nitrogen storing component, a liquid nitrogen delivery pipe and a liquid nitrogen insulating component, wherein a liquid nitrogen output end of the liquid nitrogen storing component is connected with a liquid nitrogen filling opening of the liquid nitrogen insulating component through the liquid nitrogen delivery pipe. The device for providing a low-temperature environment can overcome the defects of weak pressure-bearing capacity, poor insulation effect, deformation and the like in the prior art, thereby realizing the advantages of strong pressure-bearing capacity, good insulation effect and no deformation.
Description
Technical field
The present invention relates to the experimental provision of giant magnetostrictive material, particularly, relate to a kind of low temperature environment generator.
Background technology
At present, in a large amount of experimental studies, the research worker finds that the magnetic machine coupling performance of giant magnetostrictive material is subjected to the influence that plus load, environment temperature etc. change, particularly under low temperature environment (liquid nitrogen temperature is-196 ℃), giant magnetostrictive material have than (environment temperature is 20 ℃) under the normal temperature big a lot of magnetostriction amount.The magnetostriction amount of giant magnetostrictive material can reach 6000ppm under the low temperature environment, and the magnetostriction amount of giant magnetostrictive material is 2200ppm(ppm=10 to the maximum under the normal temperature
-6).
In the prior art, during above-mentioned giant magnetostrictive material low-temperature test, need provide low temperature environment with the low temperature environment generator.This low temperature environment generator comprises Dewar liquid nitrogen storage vessel and pressure-bearing Dewar bottle, is added with seal in the upper end of Dewar liquid nitrogen storage vessel, by pressurization, the liquid nitrogen that is stored in the Dewar liquid nitrogen storage vessel can be input in the pressure-bearing Dewar bottle; The pressure-bearing Dewar bottle is the double-layer vacuum cool-bag.
Usually, as long as the pressure-bearing Dewar bottle can have double-layer vacuum, just can reach heat preservation effect, the bearing requirements for the pressure-bearing Dewar bottle neither be very high simultaneously.But for the experiment of giant magnetostrictive material low-temperature test, the material that requires the pressure-bearing Dewar bottle to select for use can not exert an influence to the uniformity of environmental magnetic field, and the power that will bear maximum 8400N bottom the pressure-bearing Dewar bottle.
Existing pressure-bearing Dewar bottle is common Dewar type container, and the vacuum double structure all can not be born big pressure very.If common Dewar type container pressurized, and surpass the pressure that bears, can produce distortion to common Dewar type container, lose the function of insulation, serious common Dewar type container can directly destroy.
In sum, in realizing process of the present invention, the inventor finds to exist at least in the prior art that bearing capacity is weak, heat insulation effect difference and defective such as yielding.
Summary of the invention
The objective of the invention is to,, propose a kind of low temperature environment generator at the problems referred to above, with realize that bearing capacity is strong, high insulating effect and on-deformable advantage.
For achieving the above object, the technical solution used in the present invention is: a kind of low temperature environment generator, comprise liquid nitrogen storage assembly, liquid nitrogen carrier pipe and liquid nitrogen heat insulation module, the liquid nitrogen output of described liquid nitrogen storage assembly is connected with the liquid nitrogen inlet of liquid nitrogen heat insulation module through the liquid nitrogen carrier pipe.
Further, described liquid nitrogen storage assembly comprises the liquid nitrogen holder, and the seal cover at the openend of described liquid nitrogen holder is added a cover in sealing, offers the pressurization mouth on described seal cover, at described pressurization mouth Pressure gauge is installed; One end of the close liquid nitrogen storage assembly of described liquid nitrogen carrier pipe passes seal cover and extends the bottom of liquid nitrogen holder.
Further, described liquid nitrogen heat insulation module comprises the pressure-bearing Dewar bottle, is coated with the epoxy plate lid at the openend of described pressure-bearing Dewar bottle, is provided with the pressure-bearing supporting seat in the bottom centre of described pressure-bearing Dewar bottle; The other end of described liquid nitrogen carrier pipe passes the epoxy plate lid; Cover at described epoxy plate and also to offer the gas access.
Further, be connected by hold-down screw between described epoxy plate lid and the pressure-bearing Dewar bottle.
Further, the body of described pressure-bearing Dewar bottle comprises double-layer vacuum magnetism-free stainless steel outer wall, and described pressure-bearing supporting seat is positioned at bottom centre's empty cavity position of double-layer vacuum magnetism-free stainless steel outer wall.
The low temperature environment generator of various embodiments of the present invention, owing to comprise liquid nitrogen storage assembly, liquid nitrogen carrier pipe and liquid nitrogen heat insulation module, the liquid nitrogen output of liquid nitrogen storage assembly is connected with the liquid nitrogen inlet of liquid nitrogen heat insulation module through the liquid nitrogen carrier pipe; Empirical tests, the liquid nitrogen heat insulation module can bear the load of 8600N, and not yielding, high insulating effect; Bearing capacity is weak, heat insulation effect difference and yielding defective thereby can overcome in the prior art, with realize bearing capacity by force, high insulating effect and on-deformable advantage.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of the low temperature environment generator according to the present invention.
In conjunction with the accompanying drawings, Reference numeral is as follows in the embodiment of the invention:
1-pressurizes mouthful; The 2-Pressure gauge; 3-liquid nitrogen holder; 4-pressure-bearing Dewar bottle; 5-pressure-bearing supporting seat; 6-epoxy plate lid; The 7-hold-down screw.
The specific embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
According to the embodiment of the invention, provide a kind of low temperature environment generator.As shown in Figure 1, present embodiment comprises liquid nitrogen storage assembly, liquid nitrogen carrier pipe and liquid nitrogen heat insulation module, and the liquid nitrogen output of liquid nitrogen storage assembly is connected with the liquid nitrogen inlet of liquid nitrogen heat insulation module through the liquid nitrogen carrier pipe.
Wherein, in the above-described embodiments, above-mentioned liquid nitrogen storage assembly comprises liquid nitrogen holder 3, and the seal cover at the openend of liquid nitrogen holder 3 is added a cover in sealing, offers pressurization mouth 1 on seal cover, at pressurization mouth 1 Pressure gauge 2 is installed; One end of the close liquid nitrogen storage assembly of liquid nitrogen carrier pipe passes seal cover and extends the bottom of liquid nitrogen holder 3.By the reality test, after liquid nitrogen holder 3 was full of liquid nitrogen, liquid nitrogen holder 3 can keep 1.5 hours low temperature environment, thereby guaranteed to finish experiment test under low temperature environment.
In addition, also can in above-mentioned liquid nitrogen holder 3, pour the non-corrosiveness liquid of different temperatures into,, carry out the measurement of varying temperature environment to change probe temperature.
In the above-described embodiments, above-mentioned liquid nitrogen heat insulation module comprises pressure-bearing Dewar bottle 4, is coated with epoxy plate lid 6 at the openend of pressure-bearing Dewar bottle 4, helps reducing the volatilization of liquid nitrogen; Be connected by hold-down screw 7 between epoxy plate lid 6 and the pressure-bearing Dewar bottle 4; Bottom centre at pressure-bearing Dewar bottle 4 is provided with pressure-bearing supporting seat 5; The other end of liquid nitrogen carrier pipe passes epoxy plate lid 6; On epoxy plate lid 6, also offer the gas access.
Here, the body of above-mentioned pressure-bearing Dewar bottle 4 comprises double-layer vacuum magnetism-free stainless steel outer wall, and the rigidity of material of double-layer vacuum magnetism-free stainless steel outer wall own is higher, and pressure-bearing supporting seat 5 is positioned at bottom centre's empty cavity position of double-layer vacuum magnetism-free stainless steel outer wall.Here, the theoretical bearing capacity of this pressure-bearing Dewar bottle 5 is 8400N, the load of experimental result for bearing 8600N.
The low temperature environment generator of the foregoing description, can satisfy the test of the power magnetic coupling characteristic of giant magnetostrictive material under the low temperature environment, be the giant magnetostrictive material characteristic test of power-magnetic-many couplings of Re, provide good platform thereby be embodied as the application study more widely of this kind material.
Compared with prior art, the low temperature environment generator of the foregoing description has following characteristic: the material that the ⑴ internal structure is selected for use all is a nonmagnetic substance, when satisfying mechanical property, can the uniformity of magnetic field intensity not exerted an influence; ⑵ the material that select for use can not deform or take place the actual effect of mechanical characteristic under liquid nitrogen temperature, in order to avoid be damaged in the mechanical load process.
In sum, the low temperature environment generator of various embodiments of the present invention, owing to comprise liquid nitrogen storage assembly, liquid nitrogen carrier pipe and liquid nitrogen heat insulation module, the liquid nitrogen output of liquid nitrogen storage assembly is connected with the liquid nitrogen inlet of liquid nitrogen heat insulation module through the liquid nitrogen carrier pipe; Empirical tests, the liquid nitrogen heat insulation module can bear the load of 8600N, and not yielding, high insulating effect; Bearing capacity is weak, heat insulation effect difference and yielding defective thereby can overcome in the prior art, with realize bearing capacity by force, high insulating effect and on-deformable advantage.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a low temperature environment generator is characterized in that, comprises liquid nitrogen storage assembly, liquid nitrogen carrier pipe and liquid nitrogen heat insulation module, and the liquid nitrogen output of described liquid nitrogen storage assembly is connected with the liquid nitrogen inlet of liquid nitrogen heat insulation module through the liquid nitrogen carrier pipe.
2. low temperature environment generator according to claim 1, it is characterized in that described liquid nitrogen storage assembly comprises the liquid nitrogen holder, the seal cover at the openend of described liquid nitrogen holder is added a cover in sealing, on described seal cover, offer the pressurization mouth, Pressure gauge is installed at described pressurization mouth; One end of the close liquid nitrogen storage assembly of described liquid nitrogen carrier pipe passes seal cover and extends the bottom of liquid nitrogen holder.
3. low temperature environment generator according to claim 2, it is characterized in that, described liquid nitrogen heat insulation module comprises the pressure-bearing Dewar bottle, is coated with the epoxy plate lid at the openend of described pressure-bearing Dewar bottle, is provided with the pressure-bearing supporting seat in the bottom centre of described pressure-bearing Dewar bottle; The other end of described liquid nitrogen carrier pipe passes the epoxy plate lid; Cover at described epoxy plate and also to offer the gas access.
4. low temperature environment generator according to claim 3 is characterized in that, is connected by hold-down screw between described epoxy plate lid and the pressure-bearing Dewar bottle.
5. according to claim 3 or 4 described low temperature environment generators, it is characterized in that the body of described pressure-bearing Dewar bottle comprises double-layer vacuum magnetism-free stainless steel outer wall, described pressure-bearing supporting seat is positioned at bottom centre's empty cavity position of double-layer vacuum magnetism-free stainless steel outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101185177A CN102166538A (en) | 2011-05-09 | 2011-05-09 | Device for providing low-temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101185177A CN102166538A (en) | 2011-05-09 | 2011-05-09 | Device for providing low-temperature environment |
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| CN102166538A true CN102166538A (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101185177A Pending CN102166538A (en) | 2011-05-09 | 2011-05-09 | Device for providing low-temperature environment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252914A (en) * | 2011-05-09 | 2011-11-23 | 兰州大学 | Magnetomechanical coupling air pressure-loading system in low temperature environment |
| CN106555041A (en) * | 2016-11-30 | 2017-04-05 | 北京理工大学 | A kind of method of raising FeGa alloy magnetostriction performances |
| CN108295917A (en) * | 2018-01-16 | 2018-07-20 | 上海交通大学 | Wide temperature range uniform temperature field insulating box system and constant temperature method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356491A (en) * | 2001-12-30 | 2002-07-03 | 上海交通大学 | High-frequency non-magnetic Dewar container for liquefied nitrogen |
| CN1554917A (en) * | 2003-12-19 | 2004-12-15 | 上海交通大学 | Adjustable distance liquid nitrogen metal dewar for high temperature super conductive quantum interferometer |
| CN201183810Y (en) * | 2008-02-15 | 2009-01-21 | 王绍钢 | Ultra low temperature deep cold treatment apparatus |
| CN201753830U (en) * | 2010-07-14 | 2011-03-02 | 西南交通大学 | Dewar type container with sapphire part |
-
2011
- 2011-05-09 CN CN2011101185177A patent/CN102166538A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356491A (en) * | 2001-12-30 | 2002-07-03 | 上海交通大学 | High-frequency non-magnetic Dewar container for liquefied nitrogen |
| CN1554917A (en) * | 2003-12-19 | 2004-12-15 | 上海交通大学 | Adjustable distance liquid nitrogen metal dewar for high temperature super conductive quantum interferometer |
| CN201183810Y (en) * | 2008-02-15 | 2009-01-21 | 王绍钢 | Ultra low temperature deep cold treatment apparatus |
| CN201753830U (en) * | 2010-07-14 | 2011-03-02 | 西南交通大学 | Dewar type container with sapphire part |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252914A (en) * | 2011-05-09 | 2011-11-23 | 兰州大学 | Magnetomechanical coupling air pressure-loading system in low temperature environment |
| CN106555041A (en) * | 2016-11-30 | 2017-04-05 | 北京理工大学 | A kind of method of raising FeGa alloy magnetostriction performances |
| CN106555041B (en) * | 2016-11-30 | 2018-10-30 | 北京理工大学 | A method of improving FeGa alloy magnetostriction performances |
| CN108295917A (en) * | 2018-01-16 | 2018-07-20 | 上海交通大学 | Wide temperature range uniform temperature field insulating box system and constant temperature method |
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Application publication date: 20110831 |