CN109991273A - Low temperature magnetothermal effect measuring instrument heat-transfer device - Google Patents
Low temperature magnetothermal effect measuring instrument heat-transfer device Download PDFInfo
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- CN109991273A CN109991273A CN201910275500.9A CN201910275500A CN109991273A CN 109991273 A CN109991273 A CN 109991273A CN 201910275500 A CN201910275500 A CN 201910275500A CN 109991273 A CN109991273 A CN 109991273A
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- heat
- liquid nitrogen
- low temperature
- measuring instrument
- magnetothermal effect
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Health & Medical Sciences (AREA)
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Abstract
The invention discloses a kind of low temperature magnetothermal effect measuring instrument heat-transfer devices, comprising: the end of liquid nitrogen container and heat conducting pipe, heat conducting pipe is connected to the bottom of liquid nitrogen container.The present invention is suitable for the low temperature magnetothermal effect measuring instrument of liquid nitrogen refrigerating, and when carry sample moves in pipe, the environment temperature of sample is substantially uniform, is conducive to improve measurement accuracy.
Description
Technical field
The present invention relates to a kind of magnetothermal effect measuring instruments, specifically, are related to a kind of low temperature magnetothermal effect measuring instrument with thermally conductive
Device.
Background technique
Room temperature magnetic refrigerating is a kind of solid-state Refrigeration Technique, is to be expected to replace the novel of traditional gas compression formula Refrigeration Technique
Refrigeration Technique.With the development of new material new technology, nearest more than ten years, room temperature magnetic refrigerating technological development is generally weighed by various countries
Depending on, and obtain incremental advances.This technology meets the requirements of the times of current sustainable development, it is considered to be one kind is hopeful to take
For the green refrigeration technology of conventional refrigeration technology.
Refrigerant used in room temperature and middle low temperature magnetic refrigerator is solid material, and the parameter for measuring material magnetic heating performance is
Isothermal magnetic entropy becomes and insulation temperature becomes.Usual measurement method is divided into the direct method of measurement and the indirect method of measurement, and the indirect method of measurement usually consumes
When and measurement cost it is higher.
The patent No. 200520008166.4 discloses a kind of permanent-magnet magnetothermal effect direct measuring instrument, and product is using direct
Mensuration, the direct method of measurement is quick and convenient, and measurement cost is low.But product can only measure the magneto-caloric material performance of near room temperature,
The middle direct measuring device of low temperature magnetothermal effect not yet occurs, and is unfavorable for the research and development of middle low temperature magneto-caloric material.
According to magnetothermal effect principle, magneto-caloric material is under changing magnetic field effect, the phenomenon that generating heating or cool down.It adopts
With the magnetothermal effect measuring instrument of fixed field system, changes of magnetic field is generated by sample disengaging magnetic field, it is therefore desirable to which sample is mobile
Pass in and out magnetic field.There is sample room in specimen holder front end, interior to place sample.Sample is moved into and out magnetic field with specimen holder, pastes on sample
Temperature sensor temperature collection variable signal.It needs to acquire the magnetothermal effect under different temperature points when measurement, it is therefore desirable to
Magnetic field is passed in and out under different temperature points repeatedly, often due to non-uniform temperature can cause measurement error in heat conducting pipe when measuring sample.
Summary of the invention
Technical problem solved by the invention is to provide a kind of low temperature magnetothermal effect measuring instrument heat-transfer device, is suitable for liquid
The low temperature magnetothermal effect measuring instrument of nitrogen refrigeration, when carry sample moves in pipe, the environment temperature of sample is substantially uniform, is conducive to
Improve measurement accuracy.
Technical solution is as follows:
A kind of low temperature magnetothermal effect measuring instrument heat-transfer device, comprising: liquid nitrogen container and heat conducting pipe, the end connection of heat conducting pipe
In the bottom of liquid nitrogen container.
Further, the bottom of liquid nitrogen container and the end of heat conducting pipe are connected to heat-conducting plate two sides.
Further, liquid nitrogen container uses metal material, and heat-conducting plate and heat conducting pipe use copper material.
Further, liquid nitrogen container is closed at one end, and the other end is provided with opening, and opening is provided with flange, and flange is provided with method
Blue through-hole, opening are provided with sealing cover, and sealing cover is bolted in flange through-hole.
Further, liquid nitrogen container is closed at one end, and the other end is provided with opening, and a sealing spiral cover is arranged in opening.
Further, heat-conducting plate is connected to the closed end of liquid nitrogen container, heat conducting pipe place open at one end and heat-conducting plate airtight connection.
The technology of the present invention effect includes:
The present invention is suitable for the low temperature magnetothermal effect measuring instrument of liquid nitrogen refrigerating, and when measuring sample magnetothermal effect, sample exists
Heat conducting pipe is mobile, so that the environment temperature around sample keeps uniformly, being conducive to improve measurement accuracy substantially.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of low temperature magnetothermal effect measuring instrument heat-transfer device in the present invention.
Specific embodiment
Be described below and specific embodiments of the present invention be fully shown, with enable those skilled in the art to practice and
It reproduces.
As shown in Figure 1, being the structural schematic diagram of low temperature magnetothermal effect measuring instrument heat-transfer device in the present invention.
Low temperature magnetothermal effect measuring instrument heat-transfer device structure includes: liquid nitrogen container 1, heat-conducting plate 2, heat conducting pipe 3；Liquid nitrogen container 1
Bottom and the end of heat conducting pipe 3 be connected to 2 two sides of heat-conducting plate.
Liquid nitrogen container 1 is metal material, the material selection copper metal of heat-conducting plate 2, heat conducting pipe 3, by heat-conducting plate 2 by liquid nitrogen
Temperature export, the temperature of liquid nitrogen is transmitted on heat conducting pipe 3, forms substantially homogeneous cold temperature environment in heat conducting pipe 3.
Liquid nitrogen container 1 is closed at one end, and the other end is provided with opening 11, is provided with flange 12 at opening 11, flange is provided with method
Blue through-hole 13.Being open at 11 can be set sealing cover, and sealing cover is bolted at flange through-hole 13, lead to sealing cover for liquid
Nitrogen tank 1 forms the container of a sealing.Or a sealing spiral cover is set at opening 11, by sealing spiral cover for liquid nitrogen container 1
Form the container of a sealing.
Heat-conducting plate 2 is connected to the closed end of liquid nitrogen container 1, the place open at one end of heat conducting pipe 3 and 2 airtight connection of heat-conducting plate.It is thermally conductive
Pipe 3 is closely connect by heat-conducting plate 2 with top liquid nitrogen container 1.
Component part of the present invention as low temperature magnetothermal effect measuring instrument is measured for low temperature magnetothermal effect, when measurement material
When expecting magnetothermal effect, the specimen holder equipped with sample moves in heat conducting pipe 3, keeps substantially uniformly in sample ambient temperature,
Be conducive to improve measurement accuracy.The matched with devices under vacuum conditions when, compared with other devices cooling with liquid nitrogen, liquid nitrogen disappears
Consumption is smaller, advantageously reduces measurement cost.
Term used herein is explanation and term exemplary, and not restrictive.Since the present invention can be with a variety of
Form be embodied without departing from invention spirit or essence, it should therefore be appreciated that above-described embodiment be not limited to it is any above-mentioned
Details, and should widely explaining within the spirit and scope of the appended claims, thus fall into claim or its etc.
Whole change and modification in effect range all should be appended claims and be covered.
Claims (6)
1. a kind of low temperature magnetothermal effect measuring instrument heat-transfer device characterized by comprising liquid nitrogen container and heat conducting pipe, heat conducting pipe
End be connected to the bottom of liquid nitrogen container.
2. low temperature magnetothermal effect measuring instrument heat-transfer device as described in claim 1, which is characterized in that the bottom of liquid nitrogen container and lead
The end of heat pipe is connected to heat-conducting plate two sides.
3. low temperature magnetothermal effect measuring instrument heat-transfer device as described in claim 1, which is characterized in that liquid nitrogen container uses metal material
Matter, heat-conducting plate and heat conducting pipe use copper material.
4. low temperature magnetothermal effect measuring instrument heat-transfer device as described in claim 1, which is characterized in that liquid nitrogen container is closed at one end,
The other end is provided with opening, and opening is provided with flange, and flange is provided with flange through-hole, and opening is provided with sealing cover, sealing
Lid is bolted in flange through-hole.
5. low temperature magnetothermal effect measuring instrument heat-transfer device as described in claim 1, which is characterized in that liquid nitrogen container is closed at one end,
The other end is provided with opening, and a sealing spiral cover is arranged in opening.
6. the low temperature magnetothermal effect measuring instrument heat-transfer device as described in claims 1 or 2, which is characterized in that heat-conducting plate connection
In the closed end of liquid nitrogen container, heat conducting pipe place open at one end and heat-conducting plate airtight connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910275500.9A CN109991273A (en) | 2019-04-08 | 2019-04-08 | Low temperature magnetothermal effect measuring instrument heat-transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910275500.9A CN109991273A (en) | 2019-04-08 | 2019-04-08 | Low temperature magnetothermal effect measuring instrument heat-transfer device |
Publications (1)
| Publication Number | Publication Date |
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| CN109991273A true CN109991273A (en) | 2019-07-09 |
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| CN201910275500.9A Pending CN109991273A (en) | 2019-04-08 | 2019-04-08 | Low temperature magnetothermal effect measuring instrument heat-transfer device |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08278066A (en) * | 1995-04-05 | 1996-10-22 | Mitsubishi Heavy Ind Ltd | Magnetic refrigerator |
| CN2574065Y (en) * | 2002-10-10 | 2003-09-17 | 四川大学 | Pulse direct magnetothermal effect measuring device |
| US20040182086A1 (en) * | 2003-03-20 | 2004-09-23 | Hsu-Cheng Chiang | Magnetocaloric refrigeration device |
| CN1657968A (en) * | 2005-03-05 | 2005-08-24 | 包头稀土研究院 | Permanent-magnet magnetothermal effect direct measuring instrument |
| CN101915783A (en) * | 2010-08-05 | 2010-12-15 | 上海交通大学 | Heat conductivity coefficient measurer of double-test-piece guarded hot plate for liquid nitrogen temperature area |
| CN202613833U (en) * | 2012-05-18 | 2012-12-19 | 华中科技大学 | Magnetic cold accumulation device for magnetic refrigerator |
| CN103163177A (en) * | 2013-03-07 | 2013-06-19 | 包头稀土研究院 | Magnetothermal effect measurement system and method |
| CN204882762U (en) * | 2015-08-29 | 2015-12-16 | 武汉佰力博科技有限公司 | Multi -functional electricity measuring instrument of heating refrigeration integration |
| CN106872516A (en) * | 2017-03-30 | 2017-06-20 | 包头稀土研究院 | Vacuum and permanent magnet magnetothermal effect measuring instrument |
| US20170328968A1 (en) * | 2016-05-12 | 2017-11-16 | Bruker Biospin Ag | Cryogen-free magnet system comprising a magnetocaloric heat sink |
| CN107502733A (en) * | 2017-06-20 | 2017-12-22 | 江苏大学 | A kind of temperature controllable deep cooling laser peening method and device |
-
2019
- 2019-04-08 CN CN201910275500.9A patent/CN109991273A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08278066A (en) * | 1995-04-05 | 1996-10-22 | Mitsubishi Heavy Ind Ltd | Magnetic refrigerator |
| CN2574065Y (en) * | 2002-10-10 | 2003-09-17 | 四川大学 | Pulse direct magnetothermal effect measuring device |
| US20040182086A1 (en) * | 2003-03-20 | 2004-09-23 | Hsu-Cheng Chiang | Magnetocaloric refrigeration device |
| CN1657968A (en) * | 2005-03-05 | 2005-08-24 | 包头稀土研究院 | Permanent-magnet magnetothermal effect direct measuring instrument |
| CN101915783A (en) * | 2010-08-05 | 2010-12-15 | 上海交通大学 | Heat conductivity coefficient measurer of double-test-piece guarded hot plate for liquid nitrogen temperature area |
| CN202613833U (en) * | 2012-05-18 | 2012-12-19 | 华中科技大学 | Magnetic cold accumulation device for magnetic refrigerator |
| CN103163177A (en) * | 2013-03-07 | 2013-06-19 | 包头稀土研究院 | Magnetothermal effect measurement system and method |
| CN204882762U (en) * | 2015-08-29 | 2015-12-16 | 武汉佰力博科技有限公司 | Multi -functional electricity measuring instrument of heating refrigeration integration |
| US20170328968A1 (en) * | 2016-05-12 | 2017-11-16 | Bruker Biospin Ag | Cryogen-free magnet system comprising a magnetocaloric heat sink |
| CN106872516A (en) * | 2017-03-30 | 2017-06-20 | 包头稀土研究院 | Vacuum and permanent magnet magnetothermal effect measuring instrument |
| CN107502733A (en) * | 2017-06-20 | 2017-12-22 | 江苏大学 | A kind of temperature controllable deep cooling laser peening method and device |
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