CN213423446U - Device for measuring temperature coefficient of remanence of permanent magnet material - Google Patents
Device for measuring temperature coefficient of remanence of permanent magnet material Download PDFInfo
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- CN213423446U CN213423446U CN202022416005.6U CN202022416005U CN213423446U CN 213423446 U CN213423446 U CN 213423446U CN 202022416005 U CN202022416005 U CN 202022416005U CN 213423446 U CN213423446 U CN 213423446U
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- copper pipe
- permanent magnet
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Abstract
The utility model discloses a measure device of permanent magnet material remanence temperature coefficient, including copper pipe inner shell, copper pipe outer shell, heat preservation device, T type thermocouple, compensation wire and control by temperature change table, heat preservation device locates in the copper pipe outer shell, copper pipe inner shell is located in the heat preservation device, T type thermocouple is located on the copper pipe inner shell inner wall and is close to on the copper pipe inner shell diapire, compensation wire one end links to each other with T type thermocouple, the control by temperature change table links to each other with the compensation wire other end. The utility model belongs to the technical field of tombarthite permanent magnet material, specifically indicate an adopt the magnetic flow method to measure samarium cobalt permanent magnet material from low temperature to the remanence temperature coefficient under the high temperature, put into the heat preservation device that makes up by non-magnetic material with the sample, measuring equipment is in room temperature state always, and fundamentally has solved the device of the measurement permanent magnet material remanence temperature coefficient of the samarium cobalt permanent magnet material remanence temperature coefficient measurement accuracy problem under low temperature to the high temperature state.
Description
Technical Field
The utility model belongs to the technical field of tombarthite permanent magnet material, specifically indicate a measure permanent magnet material remanence temperature coefficient's device.
Background
2: the 17 type samarium cobalt permanent magnet material has excellent temperature characteristic and higher magnetic property, is widely applied to the fields of aviation, aerospace, national defense and military industry, petroleum, special motors and the like, and 2: the production of the 17-type sintered samarium cobalt magnetic material comprises five processes of smelting, milling, molding, sintering and heat treatment, and 2: the 17 type samarium cobalt permanent magnet material has a subdivision field of low-remanence temperature coefficient samarium cobalt permanent magnet material, the magnetic performance of the material has small variation with temperature, and the material is widely applied to the fields of aerospace and national defense, however, in the special application fields, an applicator needs to know the remanence temperature coefficient of the samarium cobalt permanent magnet material, the current commonly used method is a magnetic measuring instrument test method, but the method can only measure the remanence temperature coefficient from room temperature to about 300 ℃, the measurement of the remanence temperature coefficient from low temperature (such as minus 55 ℃) to high temperature 300 ℃ is not easy to realize, mainly low temperature test is difficult to carry out, even if the residual magnetism temperature coefficient is tested by using a magnetic flux method, Helmholtz matched with a magnetic flux meter is placed at low temperature and high temperature to measure the magnetic flux of the corresponding temperature, because the resistance of copper used by a sensor coil used by the Helmholtz coil varies with temperature, the magnetic flux measured by the method at high and low temperature is inaccurate, the measured temperature coefficient of remanence is therefore also inaccurate. Therefore, it is difficult to accurately measure the temperature coefficient of residual magnetism of samarium cobalt permanent magnet materials from low temperature to high temperature.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an adopt magnetic flux method to measure samarium cobalt permanent magnet material from low temperature to the remanence temperature coefficient under the high temperature, put into the heat preservation device who makes up by non-magnetic material with the sample, measuring equipment is in room temperature state always, and fundamentally has solved the device of measurement permanent magnet material remanence temperature coefficient of the samarium cobalt permanent magnet material remanence temperature coefficient measurement accuracy problem under low temperature to the high temperature state.
In order to realize the above functions, the utility model discloses the technical scheme who takes as follows: a device for measuring the residual magnetism temperature coefficient of a permanent magnet material comprises a copper pipe inner shell, a copper pipe outer shell, a heat preservation device, a T-shaped thermocouple, a compensation lead and a temperature control meter, wherein the heat preservation device is arranged in the copper pipe outer shell and is used for preserving heat in the copper pipe outer shell, the copper pipe inner shell is arranged in the heat preservation device, the heat preservation device is used for preserving heat in the copper pipe inner shell, the T-shaped thermocouple is arranged on the inner wall of the copper pipe inner shell and is close to the bottom wall of the copper pipe inner shell, a sample is arranged in the copper pipe inner shell and is in contact with the T-shaped thermocouple, the T-shaped thermocouple is used for detecting the temperature of the sample, one end of the compensation lead is connected with the T-shaped thermocouple, the temperature control meter is connected with the other end of the compensation lead, a temperature measuring probe of the T-shaped thermocouple is in contact, the whole is taken out, the heat preservation device is used for preserving the heat of the device, and the pulling method is used for measuring the magnetic flux, so that the temperature coefficient of the remanence in a certain temperature range can be obtained.
Furthermore, the heat preservation device includes asbestos and epoxy board, the epoxy board is located in the copper pipe shell, the copper pipe inner shell is located on the epoxy board, the asbestos packing is located between copper pipe inner shell outer wall and the copper pipe shell inner wall, in the copper pipe inner shell, between epoxy board and the copper pipe shell bottom wall, and asbestos and epoxy board carry out heat preservation to the interior sample of copper pipe inner shell.
Further, the asbestos and the epoxy resin plate are formed by bonding high and low temperature resistant glue.
The utility model adopts the above structure to gain beneficial effect as follows: the utility model provides a pair of measure permanent magnet material remanence temperature coefficient's device easy operation, and reasonable in design adopts the magnetic flux method to measure samarium cobalt permanent magnet material from low temperature to the remanence temperature coefficient under the high temperature, put into the heat preservation device who makes up by non-magnetic material with the sample, measuring equipment is in room temperature state always, heat preservation device keeps warm to the device, fundamentally has solved low temperature to the samarium cobalt permanent magnet material remanence temperature coefficient measurement accuracy degree problem under the high temperature state, provide data support for the client correctly uses samarium cobalt permanent magnet material.
Drawings
FIG. 1 is a schematic view of the overall structure of a device for measuring the temperature coefficient of residual magnetism of a permanent magnetic material according to the present invention;
fig. 2 is a cross-sectional view of the device for measuring temperature coefficient of remanence of permanent magnetic material of the present invention.
The temperature control device comprises a copper pipe inner shell 1, a copper pipe outer shell 2, a heat preservation device 3, a T-shaped thermocouple 4, a compensation lead 5, a temperature control meter 6, a asbestos plate 7, an asbestos plate 8 and an epoxy resin plate.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-2, the utility model relates to a measure device of permanent magnet material remanence temperature coefficient, including copper pipe inner shell 1, copper pipe outer shell 2, heat preservation device 3, T type thermocouple 4, compensation wire 5 and control by temperature change table 6, heat preservation device 3 is located in copper pipe outer shell 2, copper pipe inner shell 1 is located in heat preservation device 3, T type thermocouple 4 is located on copper pipe inner shell 1 inner wall and is close to on copper pipe inner shell 1 diapire, 5 one end of compensation wire link to each other with T type thermocouple 4, control by temperature change table 6 links to each other with the 5 other ends of compensation wire.
The heat preservation device 3 comprises asbestos 7 and an epoxy resin plate 8, the epoxy resin plate 8 is arranged in the copper pipe outer shell 2, the copper pipe inner shell 1 is arranged on the epoxy resin plate 8, and the asbestos 7 is filled between the outer wall of the copper pipe inner shell 1 and the inner wall of the copper pipe outer shell 2, the copper pipe inner shell 1 and the bottom wall of the copper pipe outer shell 2.
The asbestos 7 and the epoxy resin plate 8 are formed by bonding high and low temperature resistant glue.
When the device is used specifically, the T-shaped thermocouple 4 temperature measuring probe is in contact with a measured samarium cobalt permanent magnet material sample, the device is placed into the corresponding temperature for heating or cooling, after the temperature reaches and is kept stable, the whole device is taken out, the heat preservation device 3 is used for preserving the heat of the device, the pulling method is used for measuring the magnetic flux, and the remanence temperature coefficient in a certain temperature range can be obtained.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (3)
1. A device for measuring the temperature coefficient of remanence of permanent magnetic material is characterized in that: the temperature control device is arranged in the copper pipe outer shell, the copper pipe inner shell is arranged in the temperature control device, the T-shaped thermocouple is arranged on the inner wall of the copper pipe inner shell and close to the bottom wall of the copper pipe inner shell, one end of the compensation wire is connected with the T-shaped thermocouple, and the temperature control meter is connected with the other end of the compensation wire.
2. The apparatus according to claim 1, wherein: the heat preservation device comprises asbestos and an epoxy resin plate, wherein the epoxy resin plate is arranged in the copper pipe outer shell, the copper pipe inner shell is arranged on the epoxy resin plate, and the asbestos is filled between the outer wall of the copper pipe inner shell and the inner wall of the copper pipe outer shell, the copper pipe inner shell and the bottom wall of the copper pipe outer shell.
3. The apparatus for measuring temperature coefficient of remanence of permanent magnetic material according to claim 2, wherein: the asbestos and the epoxy resin plate are bonded by high and low temperature resistant glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022416005.6U CN213423446U (en) | 2020-10-27 | 2020-10-27 | Device for measuring temperature coefficient of remanence of permanent magnet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022416005.6U CN213423446U (en) | 2020-10-27 | 2020-10-27 | Device for measuring temperature coefficient of remanence of permanent magnet material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213423446U true CN213423446U (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022416005.6U Active CN213423446U (en) | 2020-10-27 | 2020-10-27 | Device for measuring temperature coefficient of remanence of permanent magnet material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213423446U (en) |
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2020
- 2020-10-27 CN CN202022416005.6U patent/CN213423446U/en active Active
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Address after: 014030 Baotou rare earth high tech Zone, Baotou City, Inner Mongolia Autonomous Region Patentee after: Baotou Kunlian Magnetic Industry Co.,Ltd. Address before: 014030 Baotou rare earth high tech Zone, Baotou City, Inner Mongolia Autonomous Region Patentee before: Baotou Woye Foreign Trade Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |