CN210323330U - Heating device for be used for magnetic material curie point survey - Google Patents
Heating device for be used for magnetic material curie point survey Download PDFInfo
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- CN210323330U CN210323330U CN201920577531.5U CN201920577531U CN210323330U CN 210323330 U CN210323330 U CN 210323330U CN 201920577531 U CN201920577531 U CN 201920577531U CN 210323330 U CN210323330 U CN 210323330U
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- heating
- sample
- furnace core
- heating furnace
- curie point
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Abstract
The utility model discloses a heating device for measuring Curie point of magnetic material, which comprises a sensing component and a heating component, wherein the sensing component is arranged at the upper end of the heating component; the sensing assembly comprises a heat insulation sleeve, a flat head pipe, a sample testing cable, a connecting wire and a sample placing part; the flat-head pipe is filled with a filler; the sample test cable penetrates through the heat insulation sleeve, one end of the connecting wire is connected with the test cable, and the other end of the connecting wire is wound on the sample placing part; the heating assembly comprises an upper cover, a heating furnace core, a lower cover, a heating rod and a temperature sensor. The utility model discloses in, to await measuring sample and temperature sensor insert heating furnace core upper end, utilize the heating rod heating furnace core of heating furnace core lower extreme, the sample that awaits measuring is reheated to the heating furnace core, and temperature sensor detects the temperature of heating furnace core simultaneously, is the temperature of the sample that awaits measuring, ensures that the sample that awaits measuring is unanimous with the actual measurement temperature, has eliminated traditional radiant heating furnace control by temperature change hysteresis nature problem, has improved the curie point measuring accuracy.
Description
Technical Field
The utility model relates to a heating device especially relates to a heating device that is used for magnetic material curie point survey, belongs to the experimental apparatus field.
Background
The ferromagnetic substance has strong magnetism after being magnetized, but the strong magnetism is related to temperature, and the ordered arrangement of magnetic domains can be influenced along with the temperature rise of the ferromagnetic substance and the thermal motion of the metal lattice. However, without reaching a certain temperature, the thermal motion is not sufficient to destroy the parallel alignment of the magnetic domains, at which point the average magnetic moment of any macroscopic region is still not zero, the substance is still magnetic, but the average magnetic moment decreases with increasing temperature. When the temperature reaches a certain value, due to the violent thermal motion of molecules, the magnetic domain is collapsed, the average magnetic moment is reduced to zero, the magnetism of the ferromagnetic substance is disappeared and converted into paramagnetic substance, a series of ferromagnetic properties (such as high magnetic conductivity, magnetostriction and the like) associated with the magnetic domain are completely disappeared, the hysteresis loop disappears and becomes a straight line, and the magnetic conductivity of the corresponding ferromagnetic substance is converted into the magnetic conductivity of the paramagnetic substance. The temperature corresponding to the disappearance of ferromagnetism is the curie temperature.
The traditional magnetic material Curie point is designed by adopting a radiation type heating furnace, namely, a magnetic ring sample to be measured is wound with an excitation coil and an induction coil and then is placed in an air tank of the radiation type heating furnace, and the temperature of the air tank is measured by a temperature sensor AD590 or other sensors additionally placed at the accessories of the sample to be measured. Because the thermal conductivity of air is low, the temperature uniformity in the air furnace is poor, and because the thermal conductivity of a sample is different from that of a temperature sensor, the accuracy and repeatability of actual measured data are poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the utility model aims at providing a heating device for be used for magnetic material curie point survey utilizes the heating rod heating furnace core, recycles heating furnace core heating sample, detects the temperature of heating furnace core simultaneously, is the temperature of sample promptly to guarantee the accuracy that the sample temperature detected.
In order to realize the above purpose, the utility model discloses a technical scheme:
a heating device for measuring the Curie point of a magnetic material comprises a sensing component and a heating component, wherein the sensing component is arranged at the upper end of the heating component; the sensing assembly is used for transferring heat and heating a sample to be detected in the sensing assembly.
The sensing assembly comprises a heat insulation sleeve, a flat head pipe, a sample testing cable, a connecting wire and a sample placing part; the flat-head pipe is arranged at the lower end of the heat insulation sleeve, and the filler is filled in the flat-head pipe; the sample test cable passes through the heat insulation sleeve, one end of the connecting wire is connected with the test cable, the other end of the connecting wire is wound on the sample placing part, and the sample placing part is located at the bottom end of the flat-head pipe.
In the utility model, the heat insulation sleeve is used for heat insulation; the flat-head tube is used for isolating a sample to be detected from the heating device and simultaneously carrying out good heat transfer; the sample test cable is used for connecting external electrical elements; the connecting line is used for connecting the sample testing cable and a sample to be tested in the sample placing part; the sample placing part is used for placing a sample to be tested. The filler is filled in the flat-head tube and used for conducting heat, and the temperature of the sample to be measured is ensured to be consistent with the temperature of the heating furnace core in the heating assembly.
The heating assembly comprises an upper cover, a heating furnace core, a lower cover, a heating rod and a temperature sensor; the upper cover, the heating furnace core and the lower cover are sequentially arranged from top to bottom; the heating rod penetrates through the lower cover and is vertically inserted into the heating furnace core; the flat-head pipe and the temperature sensor penetrate through the upper cover, are vertically inserted into the heating furnace core, and are respectively arranged at the left end and the right end of the heating rod at equal intervals.
In the utility model, the upper cover is used for fixing the whole heating device and insulating heat; the heating furnace core is used for heating a sample to be measured; the lower cover is used for fixing the heating rod and the heating furnace core; the heating rod is internally provided with heating current for heating; the temperature sensor is used for detecting the temperature in the heating furnace core.
Furthermore, the sensing assembly further comprises a set screw, a screw hole communicated with the inner end is formed in the side wall of the heat insulation sleeve, and the set screw is inserted into the screw hole so as to fix the sample test cable in the heat insulation sleeve and prevent the sample test cable from moving up and down.
Furthermore, the flat-head tube is of a structure with an opening at the upper end and a closed lower end, the filler is magnesium oxide powder, the heat conductivity coefficient is good, and the temperature of the sample is ensured to be consistent with that of the heating furnace core.
Furthermore, a temperature switch is arranged on the side wall of the outer end of the heating furnace core; the utility model discloses in, temperature switch detects heating element's temperature, and temperature sensor links to each other with temperature controller, and the temperature switch concatenates in heating current loop, if temperature sensor or temperature controller cause the temperature uncontrollable when damaging, and the heating device high temperature, temperature switch can directly cut off heating power supply, plays the guard action.
Furthermore, the connecting wire is an excitation coil and an induction coil, and is used for testing and researching a magnetic induction characteristic curve and a magnetic hysteresis loop of a sample; the exciting coil is connected with an external waveform signal generator, and the induction coil is connected with an external signal amplifier and then the waveform of the induction signal is observed by an oscilloscope.
Furthermore, heat-conducting silicone grease is coated between the heating furnace core and the heating rod to facilitate heat conduction.
Furthermore, the upper end of the flat-head pipe is bonded to the lower end of the heat insulation sleeve through high-temperature-resistant glue.
Furthermore, the material of the heat insulation sleeve is black POM plastic, and the material of the flat-head pipe is stainless steel.
Furthermore, the upper cover is made of polytetrafluoroethylene, the heating furnace core is made of copper, the lower cover is made of phenolic aldehyde, and the heating rod is a nichrome heating pipe.
Further, temperature sensor is PT100 platinum resistance temperature sensor, the utility model discloses in, because the sample that awaits measuring and PT100 platinum resistance temperature sensor all are good with the heating furnace core coefficient of heat conductivity of copper billet, the sample temperature that awaits measuring is the temperature that PT100 platinum resistance temperature sensor instructed promptly.
The utility model has the advantages that:
the utility model discloses in, to await measuring sample and temperature sensor insert heating furnace core upper end, utilize the heating rod heating furnace core of heating furnace core lower extreme, the sample that awaits measuring is reheated to the heating furnace core, and temperature sensor detects the temperature of heating furnace core simultaneously, is the temperature of the sample that awaits measuring, ensures that the sample that awaits measuring is unanimous with the actual measurement temperature, has eliminated traditional radiant heating furnace control by temperature change hysteresis nature problem, has improved the curie point measuring accuracy.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the sensing assembly of the present invention;
fig. 3 is a cross-sectional view of the heating assembly of the present invention;
fig. 4 is a cross-sectional view of the present invention;
in the figure: 1. a sensing component; 11. a heat insulating sleeve; 12. a plain end tube; 13. a sample test cable; 14. a connecting wire; 15. a sample placement section; 16. tightening the screw; 2. a heating assembly; 21. an upper cover; 22. heating the furnace core; 23. a lower cover; 24. a heating rod; 25. a temperature sensor; 26. and (6) a temperature switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further explained with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
A heating device for measuring Curie point of magnetic material is disclosed, as shown in FIGS. 1-4, comprising a sensing component 1 and a heating component 2, wherein the sensing component 1 is arranged at the upper end of the heating component 2;
the sensing assembly 1 comprises a heat insulation sleeve 11, a flat head pipe 12, a sample testing cable 13, a connecting wire 14 and a sample placing part 15; the flat head pipe 12 is arranged at the lower end of the heat insulation sleeve 11, and the filler is filled in the flat head pipe 12; the sample testing cable 13 penetrates through the heat insulation sleeve 11, one end of the connecting wire 14 is connected with the sample testing cable 13, the other end of the connecting wire is wound on the sample placing part 15, and the sample placing part 15 is positioned at the bottom end of the plain end pipe 12;
the heating assembly 2 comprises an upper cover 21, a heating furnace core 22, a lower cover 23, a heating rod 24 and a temperature sensor 25; the upper cover 21, the heating furnace core 22 and the lower cover 23 are arranged in sequence from top to bottom; the heating rod 24 is vertically inserted into the heating furnace core 22 through the lower cover 23; the flat head tube 12 and the temperature sensor 25 are vertically inserted into the heating furnace core 22 through the upper cover 21, and are respectively arranged at the left end and the right end of the heating rod 24 at equal intervals.
As the utility model discloses an optimization scheme, sensing component 1 still includes holding screw 16, is equipped with the inner screw hole of intercommunication on the lateral wall of radiation shield 11, and holding screw 16 inserts in the screw hole.
As the optimization scheme of the utility model, the plain end pipe 12 is a structure with an upper end opening and a lower end closed, and the filling agent is magnesia powder.
As an optimized proposal of the utility model, a temperature switch 26 is arranged on the side wall of the outer end of the heating furnace core 22.
As the optimization scheme of the utility model, connecting wire 14 is excitation and induction coil.
As an optimized proposal of the utility model, heat-conducting silicone grease is smeared between the heating furnace core 22 and the heating rod 24.
As the optimization scheme of the utility model, the upper end of the plain end pipe 12 is bonded at the lower end of the heat insulation sleeve 11 through high temperature resistant glue.
As the optimization scheme of the utility model, the material of the heat insulation sleeve 11 is black POM plastic, and the material of the plain end pipe 12 is 304 stainless steel.
As the optimization scheme of the utility model, the material of upper cover 21 is polytetrafluoroethylene, and the material of heating furnace core 22 is copper, and the material of lower cover 23 is the phenolic aldehyde, and heating rod 24 is the nichrome heating pipe.
As the optimization scheme of the utility model, temperature sensor 25 is PT100 platinum resistance temperature sensor.
For better understanding, the utility model discloses, following is to the theory of operation of the utility model make a complete description:
placing a sample to be tested: firstly, winding excitation and induction wires on a to-be-detected circular ring sample, then placing the circular ring sample into a plain end tube 12 (namely a sample placing part 15 in the drawing) filled with magnesia powder, and then exposing leading-out ends of four wires (integrally a connecting wire 14 in the drawing) of an excitation coil and an induction coil outside an upper port of the plain end tube 12; secondly, gluing the upper port of the plain end pipe 12 to avoid the leakage of the filled magnesia powder; then, a four-core cable (a sample test cable 13 in the figure) is inserted into the heat insulation sleeve 11, four wires of the four-core cable are respectively welded with four wires of the leading-out end of the excitation coil and the induction coil one by using ferroelectric, finally, the upper end of the plain end pipe 12 is bonded to the lower end of the heat insulation sleeve 11 by using high-temperature resistant glue, a part of the four-core cable is pulled out to the outer end and then a set screw 16 is screwed, and the set screw 16 prevents the welding point from being torn off.
When heating, current is introduced into the heating rod 24, the current is adjustable and is used for controlling the adjustment of the heating rate, the heating rod 24 generates heat to heat the heating furnace core 22, the heating furnace core 22 transfers the heat to the flat head tube 12, the magnesium oxide powder in the flat head tube 12 transfers the heat to the sample to be measured of the sample placing part 15, so that the sample to be measured is heated, and the temperature of the sample to be measured rises; at the same time, the PT100 platinum resistance temperature sensor 25 at the other end of the heating core 22 is also heated, and the temperature rises. Because the sample to be measured and the PT100 platinum resistance temperature sensor have good heat conductivity coefficient with the heating furnace core 22 of the copper block, and the distances from the sample to be measured and the PT100 platinum resistance temperature sensor to the heating furnace core 22 are equal, the temperature of the sample to be measured is the temperature indicated by the PT100 platinum resistance temperature sensor 25.
The utility model discloses in, PT100 platinum resistance temperature sensor 25 still links to each other with temperature controller, and temperature switch 26 concatenations causes the temperature uncontrollable when temperature sensor 25 or temperature controller damage in heating current loop, and the heating device high temperature surpasss 115 ℃ after, and temperature switch 26 can directly cut off heating power supply, plays the guard action.
The utility model discloses a heating device still can be external to have heating current controller, sinusoidal signal generator, oscilloscope etc to test magnetic material curie point, but this is not the protection of this patent important, consequently no longer detailed description.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A heating device for curie point determination of a magnetic material, characterized by: the device comprises a sensing assembly (1) and a heating assembly (2), wherein the sensing assembly (1) is arranged at the upper end of the heating assembly (2);
the sensing assembly (1) comprises a heat insulation sleeve (11), a flat head pipe (12), a sample testing cable (13), a connecting wire (14) and a sample placing part (15); the flat head pipe (12) is arranged at the lower end of the heat insulation sleeve (11), and the filler is filled in the flat head pipe (12); the sample testing cable (13) penetrates through the heat insulation sleeve (11), one end of the connecting wire (14) is connected with the sample testing cable (13), the other end of the connecting wire is wound on the sample placing part (15), and the sample placing part (15) is positioned at the bottom end of the plain end pipe (12);
the heating assembly (2) comprises an upper cover (21), a heating furnace core (22), a lower cover (23), a heating rod (24) and a temperature sensor (25); the upper cover (21), the heating furnace core (22) and the lower cover (23) are sequentially arranged from top to bottom; the heating rod (24) penetrates through the lower cover (23) and is vertically inserted into the heating furnace core (22); the flat-head pipe (12) and the temperature sensor (25) penetrate through the upper cover (21) and are vertically inserted into the heating furnace core (22), and the flat-head pipe and the temperature sensor are respectively arranged at the left end and the right end of the heating rod (24) at equal intervals.
2. A heating device for curie point determination of a magnetic material as claimed in claim 1, wherein: the sensing assembly (1) further comprises a set screw (16), a screw hole communicated with the inner end is formed in the side wall of the heat insulation sleeve (11), and the set screw (16) is inserted into the screw hole.
3. A heating device for curie point determination of a magnetic material as claimed in claim 1, wherein: the plain end pipe (12) is of a structure with an opening at the upper end and a closed lower end, and the filler is magnesium oxide powder.
4. A heating device for curie point determination of a magnetic material as claimed in claim 1, wherein: and a temperature switch (26) is arranged on the side wall of the outer end of the heating furnace core (22).
5. A heating device for curie point determination of a magnetic material as claimed in claim 1, wherein: the connecting wires (14) are exciting and induction coils.
6. A heating device for curie point determination of a magnetic material as claimed in claim 1, wherein: and heat-conducting silicone grease is coated between the heating furnace core (22) and the heating rod (24).
7. A heating device for curie point determination of a magnetic material as claimed in claim 1, wherein: the upper end of the flat head pipe (12) is bonded to the lower end of the heat insulation sleeve (11) through high-temperature-resistant glue.
8. A heating device for curie point determination of a magnetic material as claimed in claim 1, wherein: the material of the heat insulation sleeve (11) is black POM plastic, and the material of the flat head pipe (12) is 304 stainless steel.
9. A heating device for curie point determination of a magnetic material as claimed in claim 1, wherein: the material of upper cover (21) is polytetrafluoroethylene, the material of heating furnace core (22) is copper, the material of lower cover (23) is phenol-formaldehyde, heating rod (24) are nichrome heating pipe.
10. A heating device for curie point determination of a magnetic material as claimed in claim 1, wherein: the temperature sensor (25) is a PT100 platinum resistance temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920577531.5U CN210323330U (en) | 2019-04-25 | 2019-04-25 | Heating device for be used for magnetic material curie point survey |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920577531.5U CN210323330U (en) | 2019-04-25 | 2019-04-25 | Heating device for be used for magnetic material curie point survey |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210323330U true CN210323330U (en) | 2020-04-14 |
Family
ID=70136952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920577531.5U Expired - Fee Related CN210323330U (en) | 2019-04-25 | 2019-04-25 | Heating device for be used for magnetic material curie point survey |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210323330U (en) |
-
2019
- 2019-04-25 CN CN201920577531.5U patent/CN210323330U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20200414 Termination date: 20210425 |