CN112577993A - Sample rod with wing-shaped cover for magnetocaloric effect measuring instrument and using method thereof - Google Patents
Sample rod with wing-shaped cover for magnetocaloric effect measuring instrument and using method thereof Download PDFInfo
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- CN112577993A CN112577993A CN202011527641.4A CN202011527641A CN112577993A CN 112577993 A CN112577993 A CN 112577993A CN 202011527641 A CN202011527641 A CN 202011527641A CN 112577993 A CN112577993 A CN 112577993A
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- 230000000694 effects Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims description 8
- 239000004519 grease Substances 0.000 claims description 7
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims 1
- 229920006362 Teflon® Polymers 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 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
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The invention discloses a sample rod with a wing-shaped cover for a magnetocaloric effect measuring instrument, which comprises: the sample rod comprises a sample rod body, a wing-shaped cover and a jackscrew; the front end of the sample rod body is provided with a sample chamber, positioning clamping grooves are formed in the sample rod bodies on the left side and the right side of the sample chamber, and fixing clamping grooves are formed in the sample rod bodies on the front side and the rear side of the sample chamber; a threaded hole is formed in the end face of the front part of the sample rod body, and a jackscrew is installed in the threaded hole; the wing-shaped cover is provided with side wings at two sides respectively, the side wings are embedded into the positioning clamping grooves, and the front end and the rear end of the wing-shaped cover are embedded into the fixing clamping grooves. The invention also discloses a using method of the sample rod with the wing-shaped cover for the magnetocaloric effect measuring instrument. The invention ensures that the sample of the magnetic thermal effect measuring instrument is more conveniently and quickly installed, and improves the measuring efficiency of the magnetic thermal effect.
Description
Technical Field
The invention belongs to the technical field of room-temperature magnetic refrigeration, and particularly relates to a sample rod with a wing-shaped cover for a magnetic thermal effect measuring instrument and a using method thereof.
Background
The room temperature magnetic refrigeration is a solid state refrigeration technology, and is a novel refrigeration technology which is expected to replace the traditional gas compression type refrigeration technology. With the development of new materials and new technologies, the development of room temperature magnetic refrigeration technology has been generally regarded by various countries and has made great progress in recent ten years. The technology meets the current requirement of the era of sustainable development and is considered as a green refrigeration technology which is hopeful to replace the traditional refrigeration technology. The refrigeration medium used by the room temperature magnetic refrigerator is a solid material, parameters for measuring the magnetic thermal performance of the material are isothermal magnetic entropy change and adiabatic temperature change, generally, the measuring method is divided into a direct measuring method and an indirect measuring method, the indirect measuring method is generally time-consuming and high in measuring cost, the direct measuring method is rapid and convenient, and the measuring cost is low.
Chinese patent No. 201720521044.8 discloses a sample rod for a magnetocaloric effect direct measuring instrument, which can improve the efficiency of sample measurement, but the sample rod has some disadvantages. In a three-dimensional rectangular coordinate system, the sample cover of the sample chamber has two-dimensional freedom, and the sample cover is easy to fall off after being covered, so that the sample cover needs to be bound and fixed by using an adhesive tape, which brings inconvenience for operation on one hand and has the problem of consumption of the adhesive tape on the other hand.
Disclosure of Invention
The invention aims to provide a sample rod with a wing-shaped cover for a magnetic thermal effect measuring instrument and a using method thereof, so that the sample in the magnetic thermal effect measuring instrument can be more conveniently and quickly installed, and the measuring efficiency of the magnetic thermal effect is improved.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
sample rod for magnetocaloric effect measuring instrument with wing cover, comprising: the sample rod comprises a sample rod body, a wing-shaped cover and a jackscrew; the front end of the sample rod body is provided with a sample chamber, positioning clamping grooves are formed in the sample rod bodies on the left side and the right side of the sample chamber, and fixing clamping grooves are formed in the sample rod bodies on the front side and the rear side of the sample chamber; a threaded hole is formed in the end face of the front part of the sample rod body, and a jackscrew is installed in the threaded hole; the wing-shaped cover is provided with side wings at two sides respectively, the side wings are embedded into the positioning clamping grooves, and the front end and the rear end of the wing-shaped cover are embedded into the fixing clamping grooves.
Further, the rear end of the sample chamber is provided with a positioning groove.
Furthermore, the appearance of the combined sample rod body and the wing-shaped cover is cylindrical.
Furthermore, the material of the sample rod is plastic, nylon or polytetrafluoroethylene.
Further, install the sample in the sample bin, the sample includes: the device comprises a first sample and a second sample, wherein a sample space is arranged on the inner side end face of the first sample; the temperature sensor is positioned in the sample space and clamped between the first sample and the second sample; the tip of the jack screw abuts the end of the second sample.
The use method of the sample rod with the wing-shaped cover for the magnetocaloric effect measuring instrument comprises the following steps:
cutting a sample into a first sample and a second sample from the middle, grinding and polishing a cutting surface, arranging a sample space on the cutting surface of the first sample, and smearing heat-conducting silicone grease on the end surface of the inner side of the second sample;
taking off the wing-shaped cover on the sample rod body, adhering the temperature sensor to the end face of the inner side of the second sample, smearing heat-conducting silicone grease on the temperature sensor, combining the first sample and the second sample, and clamping the temperature sensor between the first sample and the second sample in the sample space;
placing a first sample and a second sample which are clamped with a temperature sensor into a sample chamber, wherein the end part of the first sample is positioned in a positioning groove, the end part of the second sample is opposite to a jackscrew, the jackscrew is screwed to push the second sample, and the first sample and the second sample are tightly fixed to enable the temperature sensor to be tightly attached to the first sample and the second sample;
the wing-shaped cover is buckled at the upper part of the sample bin, the side wings at two sides of the wing-shaped cover are embedded into the positioning clamping grooves, the front end and the rear end of the wing-shaped cover are embedded into the fixing clamping grooves, and the sample rod is arranged in the measuring instrument to measure the magnetic thermal effect of the sample.
Preferably, the sample moves in and out of the magnetic field along with the sample rod, and the temperature sensor attached to the sample collects temperature change signals.
The invention has the technical effects that:
according to the invention, the wing-shaped cover and the sample rod body are fixed in a matching manner, other fixing means are not needed, the sample is conveniently and rapidly installed, and the magnetocaloric effect measurement efficiency is improved.
The sample cover only has one degree of freedom, the installation stability of a sample is enhanced, and the tight fit of the sample chamber and the wing-shaped cover is adopted in the degree of freedom, so that the sample cover is not easy to loosen and separate, and does not need to be bound by an adhesive tape; and meanwhile, the wing-shaped cover is provided with side wings at two sides, so that the wing-shaped cover is convenient to open. The invention ensures that the sample of the magnetocaloric effect measuring instrument is more conveniently and quickly installed, and further improves the efficiency of measuring the magnetocaloric effect.
Drawings
FIG. 1 is a schematic perspective view of a sample rod body according to the present invention;
FIG. 2 is a schematic perspective view of a jackscrew according to the present invention;
fig. 3 is a perspective view of the wing cover according to the present invention.
Detailed Description
The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce it.
As shown in fig. 1, it is a schematic perspective view of a sample rod body 1 according to the present invention; fig. 2 is a schematic perspective view of the jackscrew 3 according to the present invention.
Sample rod for magnetocaloric effect measuring instrument with wing cover, comprising: the device comprises a sample rod body 1, a wing-shaped cover 2 and a jackscrew 3; the front end of the sample rod body 1 is provided with a sample chamber 11, positioning clamping grooves 12 are formed in the sample rod bodies 1 on the left side and the right side of the sample chamber 11, and fixing clamping grooves 15 are formed in the sample rod bodies 1 on the front side and the rear side of the sample chamber 11; the rear end of the sample chamber 11 is provided with a positioning groove 13, a threaded hole 14 is formed in the end face of the front portion of the sample rod body 1, and the jackscrew 3 is installed in the threaded hole 14.
The sample chamber 11 is a sinking chamber, the top of the sample chamber 11 is provided with a jackscrew 3, and the positioning groove 13 and the jackscrew 3 are matched to tighten the sample; the wing-shaped cover 2 is matched with the sample bin 11 and is not easy to loosen, the wing-shaped cover 2 only has one-direction freedom degree in the three-dimensional direction, the wing-shaped cover 2 is not easy to fall off, and the wing-shaped cover 2 can be conveniently opened. When a sample is loaded, the wing-shaped cover 2 is opened, the temperature sensor is adhered to the sample and is placed into the sample chamber, the sample is fixed by the jackscrew 3, and the wing-shaped cover 2 is covered, so that the operation is convenient and rapid.
Fig. 3 is a schematic perspective view of the wing cover 2 according to the present invention.
The two sides of the wing-shaped cover 2 are respectively provided with a side wing 21, the wing-shaped cover 2 is embedded into the sunken bin after being buckled at the upper part of the sample bin 11, the side wings 21 are positioned in the positioning clamping grooves 12, and the front end and the rear end of the wing-shaped cover 2 are embedded into the fixing clamping grooves 15; the sample chamber 11 and the wing-shaped cover 2 are tightly attached, and the wing-shaped cover 2 can be opened from the side wings 21 when the wing-shaped cover is opened.
The sample rod is cylindrical and is made of materials such as plastics, nylon, polytetrafluoroethylene and the like, and in view of the fact that the polytetrafluoroethylene material has high-low temperature resistance, self-lubricating performance and certain elasticity, the sample rod is preferably made of the polytetrafluoroethylene material.
The use method of the sample rod with the wing-shaped cover for the magnetocaloric effect measuring instrument comprises the following specific steps:
step 1: cutting a sample into a first sample and a second sample from the middle, grinding and polishing a cutting surface, arranging a sample space on the cutting surface of the first sample, and smearing heat-conducting silicone grease on the end surface of the inner side of the second sample;
the sample space is a groove or a hole so as to be convenient for placing the temperature sensor, and the end face of the inner side of the second sample is coated with heat-conducting silicone grease so as to be used for subsequently attaching the temperature sensor.
Step 2: taking down the wing-shaped cover 2 on the sample rod body 1, adhering the temperature sensor to the end surface of the inner side of the second sample, smearing heat-conducting silicone grease on the temperature sensor, combining the first sample and the second sample, and clamping the temperature sensor between the first sample and the second sample in the sample space;
and step 3: placing a first sample and a second sample which are clamped with a temperature sensor into a sample chamber 11, wherein the end part of the first sample is positioned in a positioning groove 13, the end part of the second sample is opposite to a jackscrew 3, the jackscrew 3 is screwed to push the second sample, the first sample and the second sample are tightly fixed, and the temperature sensor is tightly attached to the first sample and the second sample;
and 4, step 4: the wing-shaped cover 2 is buckled at the upper part of the sample bin 11, the side wings 21 at two sides of the wing-shaped cover 2 are positioned in the positioning clamping grooves 12, and the sample rod is arranged in a measuring instrument to measure the magnetocaloric effect of the sample.
According to the principle of magnetocaloric effect, the magnetocaloric material can generate a phenomenon of temperature rise or temperature drop under the action of a changing magnetic field. The invention adopts a fixed magnetic field system, and the sample enters and exits the magnetic field to generate magnetic field change, so that the sample is required to move in and out of the magnetic field.
A sample is placed in the sample chamber 11, the sample moves in and out of the magnetic field along with the sample rod, and a temperature sensor adhered to the sample acquires a temperature change signal. When in measurement, the magnetocaloric effect at different temperature points needs to be acquired, so that the magnetic field needs to be repeatedly accessed at different temperature points.
The terminology used herein is for the purpose of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (7)
1. A sample rod with a wing-shaped cover for a magnetocaloric effect measuring instrument, comprising: the sample rod comprises a sample rod body, a wing-shaped cover and a jackscrew; the front end of the sample rod body is provided with a sample chamber, positioning clamping grooves are formed in the sample rod bodies on the left side and the right side of the sample chamber, and fixing clamping grooves are formed in the sample rod bodies on the front side and the rear side of the sample chamber; a threaded hole is formed in the end face of the front part of the sample rod body, and a jackscrew is installed in the threaded hole; the wing-shaped cover is provided with side wings at two sides respectively, the side wings are embedded into the positioning clamping grooves, and the front end and the rear end of the wing-shaped cover are embedded into the fixing clamping grooves.
2. The sample rod for a magnetocaloric effect measuring instrument having a wing cover according to claim 1, wherein the rear end of the sample chamber is provided with a positioning groove.
3. The sample rod with the wing cap for a magnetocaloric effect measuring instrument according to claim 1, wherein the combined sample rod body and the wing cap have a cylindrical shape.
4. The sample rod with the wing-shaped cover for the magnetocaloric effect measuring instrument according to claim 1, wherein the material of the sample rod is plastic, nylon or teflon.
5. The sample rod for magnetocaloric effect measuring instrument with wing cover according to claim 1, wherein the sample chamber is installed with a sample, the sample comprising: the device comprises a first sample and a second sample, wherein a sample space is arranged on the inner side end face of the first sample; the temperature sensor is positioned in the sample space and clamped between the first sample and the second sample; the tip of the jack screw abuts the end of the second sample.
6. The method for using the sample rod with the wing-shaped cover for the magnetocaloric effect measuring instrument according to any one of claims 1 to 5, comprising:
cutting a sample into a first sample and a second sample from the middle, grinding and polishing a cutting surface, arranging a sample space on the cutting surface of the first sample, and smearing heat-conducting silicone grease on the end surface of the inner side of the second sample;
taking off the wing-shaped cover on the sample rod body, adhering the temperature sensor to the end face of the inner side of the second sample, smearing heat-conducting silicone grease on the temperature sensor, combining the first sample and the second sample, and clamping the temperature sensor between the first sample and the second sample in the sample space;
placing a first sample and a second sample which are clamped with a temperature sensor into a sample chamber, wherein the end part of the first sample is positioned in a positioning groove, the end part of the second sample is opposite to a jackscrew, the jackscrew is screwed to push the second sample, and the first sample and the second sample are tightly fixed to enable the temperature sensor to be tightly attached to the first sample and the second sample;
the wing-shaped cover is buckled at the upper part of the sample bin, the side wings at two sides of the wing-shaped cover are embedded into the positioning clamping grooves, the front end and the rear end of the wing-shaped cover are embedded into the fixing clamping grooves, and the sample rod is arranged in the measuring instrument to measure the magnetic thermal effect of the sample.
7. The method of using a sample rod for a magnetocaloric effect measuring instrument having a wing cover according to claim 6, wherein the sample moves in and out of the magnetic field with the sample rod, and the temperature sensor attached to the sample collects a temperature change signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527641.4A CN112577993A (en) | 2020-12-22 | 2020-12-22 | Sample rod with wing-shaped cover for magnetocaloric effect measuring instrument and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527641.4A CN112577993A (en) | 2020-12-22 | 2020-12-22 | Sample rod with wing-shaped cover for magnetocaloric effect measuring instrument and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112577993A true CN112577993A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011527641.4A Pending CN112577993A (en) | 2020-12-22 | 2020-12-22 | Sample rod with wing-shaped cover for magnetocaloric effect measuring instrument and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114296016A (en) * | 2021-12-30 | 2022-04-08 | 北京科技大学 | Device and method for measuring magnetism by applying uniaxial strain in situ |
Citations (4)
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|---|---|---|---|---|
| CN2574065Y (en) * | 2002-10-10 | 2003-09-17 | 四川大学 | Pulse direct magnetothermal effect measuring device |
| CN206974939U (en) * | 2017-05-08 | 2018-02-06 | 包头稀土研究院 | Magnetothermal effect measuring instrument specimen holder |
| CN111272792A (en) * | 2020-03-24 | 2020-06-12 | 深圳市速普仪器有限公司 | Pretreatment equipment for electron microscope sample |
| CN214252107U (en) * | 2020-12-22 | 2021-09-21 | 包头稀土研究院 | Sample rod with wing-shaped cover for magnetocaloric effect measuring instrument |
-
2020
- 2020-12-22 CN CN202011527641.4A patent/CN112577993A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2574065Y (en) * | 2002-10-10 | 2003-09-17 | 四川大学 | Pulse direct magnetothermal effect measuring device |
| CN206974939U (en) * | 2017-05-08 | 2018-02-06 | 包头稀土研究院 | Magnetothermal effect measuring instrument specimen holder |
| CN111272792A (en) * | 2020-03-24 | 2020-06-12 | 深圳市速普仪器有限公司 | Pretreatment equipment for electron microscope sample |
| CN214252107U (en) * | 2020-12-22 | 2021-09-21 | 包头稀土研究院 | Sample rod with wing-shaped cover for magnetocaloric effect measuring instrument |
Non-Patent Citations (1)
| Title |
|---|
| 范文迪等: "磁热效应演示装置的设计与制作", 物理实验, no. 01, 31 January 2014 (2014-01-31), pages 13 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114296016A (en) * | 2021-12-30 | 2022-04-08 | 北京科技大学 | Device and method for measuring magnetism by applying uniaxial strain in situ |
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