CN2352958Y - Permanent magnetic device for investigating temp. coefficient - Google Patents
Permanent magnetic device for investigating temp. coefficient Download PDFInfo
- Publication number
- CN2352958Y CN2352958Y CN 98241658 CN98241658U CN2352958Y CN 2352958 Y CN2352958 Y CN 2352958Y CN 98241658 CN98241658 CN 98241658 CN 98241658 U CN98241658 U CN 98241658U CN 2352958 Y CN2352958 Y CN 2352958Y
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- permanent magnet
- utility
- model
- temperature
- sample
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Abstract
The utility model relates to a device which is especially suitable for measuring permanent magnetic temperature coefficient, belonging to measuring devices for permanent magnet materials. The utility model is characterized in that a table rack in a magnetic shade hood is provided with a heating stove body, the inn part of the stove body is provided with a sample chamber and samples, an outer sleeve of the stove body is provided with a cooling sleeve, a cover of the stove body is provided with a heat insulating hood, the table rack is also provided with a probe bracket and a probe which is connected with a magnetometer and a plotter in series, and a thermocouple is connected with the plotter. The utility model has the advantages of high measuring precision and good repeatability, and the utility model not only can give the temperature coefficient of samples under any temperature, but also the utility model can give the average factor coefficient of samples within some temperature range.
Description
The utility model belongs to the measuring equipment of permanent magnetic material.Be specially adapted to the temperature coefficient measurement mechanism of permanent magnet.
In the permanent magnetic material field, the particularly application of permanent magnet under specific use makes this physical parameter of temperature coefficient of permanent magnet seem even more important.For the device of measuring temperature coefficient, its measuring accuracy is again directly to influence the key that can tested permanent magnet correctly be used, so the measuring accuracy of temperature coefficient measurement mechanism is the development prospect that is concerning the low-temperature coefficient permanent magnetic material.At present, the method of measuring temperature coefficient in the prior art has the coil of employing czochralski method, because the major defect of measurement mechanism that this method adopts is, after lifting the measurement coil at every turn, can not guarantee accurately to reset, cause artificial measurement error, this device is because coil is the outside that is enclosed within measuring tube in addition, distance between coil and the sample is bigger, then can cause measuring error to increase, also have body of heater heating control system precision not enough and to measure temperature coefficient discontinuous in addition, can only measure in a certain temperature range, the open a way deficiencies such as mean value of magnetic flux of sample.
The purpose of this utility model be propose a kind of can continuous coverage permanent magnet temperature coefficient, and measuring accuracy is high and the permanent magnet temperature coefficient measurement mechanism of good reproducibility.
The concrete structure of the temperature coefficient measurement mechanism of the utility model permanent magnet can be narrated with reference to the accompanying drawings, and this accompanying drawing is the structural representation sectional view of this device, and 1 is the permanent magnet sample in the accompanying drawings, 2 is the sample chamber, and 3 is heating furnace body, and 4 is stay-warm case, 5 is thermopair, and 6 is stand, and 7 is measuring sonde, 8 is probe bracket, 9 is magnetic shielding cover, and 10 is magnetometer, and 11 is temperature-controlled instrument, 12 is chart recording instrument, and 13 is cooling jacket.Can find out by accompanying drawing, it is by magnetic shielding that the temperature coefficient measurement mechanism of the utility model permanent magnet is formed, worktable and controlling recording three parts are formed, it is characterized in that stand 6 being housed at magnetic shielding cover 9 inner bottom parts, heating furnace body 3 is housed on stand 6, in heating furnace body 3, be set with sample chamber 2, permanent magnet sample 1 is housed in sample chamber 2, stay-warm case 4 is stamped in 2 upper end in the sample chamber, thermopair 5 is equipped with in the lower end, outer wall at heating furnace body 3 also is equipped with cooling jacket 13, the front end of probe bracket 8 is equipped with measuring sonde 7, the lower end is mounted on the stand 6, and measuring sonde 7 should be connected in series with magnetometer 10 chart recording instruments 12, and thermopair 5 joins with chart recording instrument 12, heating furnace body 3 links with temperature-controlled instrument 11, and cooling jacket 13 joins with cooling source.Another feature in should putting is that the placement of permanent magnet sample 1 in sample chamber 2 should be that magnetic line of force transmit direction vertically parallels with probe 7.In order accurately to measure permanent magnet sample 1 temperature coefficient, each parts of other on stand 6 all adopt no magnetic material to manufacture, and the protection of magnetic shielding cover 9 is installed, and its objective is to eliminate the interference of space scattering magnetic field to the sample measurement signal.The course of work of this device is in the time will measuring the temperature coefficient from low temperature to high temperature of permanent magnet sample 1, should open cooling source earlier, liquid coolant can be reduced to subzero with the temperature of permanent magnet sample 1 through cooling jacket 13, pop one's head in this moment and 7 note in the space measurement value by magnetometer 10 and chart recording instrument 12, open temperature controller 11 closing cooling source, heating furnace body 3 begins permanent magnet sample 1 is heated up, and the actual temperature that thermopair 5 will record permanent magnet sample 1 this moment inputs to record in the chart recording instrument 12.Therefore by chart recording instrument 12, the temperature variant curve plotting of open circuit magnetic flux of permanent magnet sample 1 can be come out.Can calculate under arbitrary temperature when measuring according to this curve, the temperature coefficient of sample equally also can calculate the average temperature coefficient in a certain temperature range.
The temperature coefficient measurement mechanism of the utility model permanent magnet has the measuring accuracy height compared with prior art, good reproducibility, can obtain the temperature variant curve of open circuit magnetic flux of sample by chart recording instrument 12, therefore this device promptly can provide the temperature coefficient under arbitrary temperature of sample, and can provide the average temperature coefficient in a certain temperature range.
Claims (2)
1, a kind of temperature coefficient measurement mechanism that can measure permanent magnet, the composition of its this device is by magnetic shielding cover, worktable and controlling recording three parts are formed, it is characterized in that stand (6) being housed at magnetic shielding cover (9) inner bottom part, heating furnace body (3) is housed on stand (6), in heating furnace body (3), be set with sample chamber (2), permanent magnet sample (1) is housed in sample chamber (2), stay-warm case (4) is stamped in the upper end of (2) in the sample chamber, thermopair (5) is equipped with in the lower end, outer wall at heating furnace body (3) is equipped with cooling jacket (13), the front end of probe bracket (8) is equipped with measuring sonde (7), the lower end is mounted on the stand (6), measuring sonde (7) and magnetometer (10), chart recording instrument (12) should be connected in series, thermopair (5) and chart recording instrument (12) link, and heating furnace body (3) and temperature-controlled instrument (11) cooling jacket (13) that joins joins with cooling source.
2,, it is characterized in that the placement of permanent magnet sample (1) in sample chamber (2) should be that magnetic line of force transmit direction vertically parallels with probe 7 according to the described device of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241658 CN2352958Y (en) | 1998-10-22 | 1998-10-22 | Permanent magnetic device for investigating temp. coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241658 CN2352958Y (en) | 1998-10-22 | 1998-10-22 | Permanent magnetic device for investigating temp. coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2352958Y true CN2352958Y (en) | 1999-12-08 |
Family
ID=33988375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98241658 Expired - Lifetime CN2352958Y (en) | 1998-10-22 | 1998-10-22 | Permanent magnetic device for investigating temp. coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2352958Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7449883B2 (en) | 2006-07-19 | 2008-11-11 | Siemens Aktiengesellschaft | Method and apparatus for measuring change in magnetic induction of a magnetic material with respect to temperature |
| CN102445672A (en) * | 2011-09-19 | 2012-05-09 | 中国航空工业第六一八研究所 | Permanent magnet residual magnetism temperature coefficient measuring device and method |
| CN102520379A (en) * | 2011-12-29 | 2012-06-27 | 钢铁研究总院 | Equipment and method for detecting temperature coefficient of remanence |
| CN102830375A (en) * | 2011-11-30 | 2012-12-19 | 西南应用磁学研究所 | Device and method for measuring temperature properties of permanent magnet and permanent magnet material in open circuit |
| CN103885009A (en) * | 2014-03-13 | 2014-06-25 | 中国计量科学研究院 | Permanent magnet temperature coefficient open-circuit measuring device and method |
| CN112269156A (en) * | 2020-10-23 | 2021-01-26 | 河北工业大学 | Permanent magnet magnetic property temperature coefficient measuring and variable temperature/high temperature permanent magnet magnetic property monitoring device |
| CN112730595A (en) * | 2020-12-18 | 2021-04-30 | 哈尔滨工业大学 | Magnetic flux online measurement method of permanent magnet material in high-temperature state |
-
1998
- 1998-10-22 CN CN 98241658 patent/CN2352958Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7449883B2 (en) | 2006-07-19 | 2008-11-11 | Siemens Aktiengesellschaft | Method and apparatus for measuring change in magnetic induction of a magnetic material with respect to temperature |
| CN101109720B (en) * | 2006-07-19 | 2011-02-16 | 西门子（中国）有限公司 | Method and apparatus for measuring change characteristic of magnetic material magnetic flux density according to temperature |
| CN102445672A (en) * | 2011-09-19 | 2012-05-09 | 中国航空工业第六一八研究所 | Permanent magnet residual magnetism temperature coefficient measuring device and method |
| CN102830375A (en) * | 2011-11-30 | 2012-12-19 | 西南应用磁学研究所 | Device and method for measuring temperature properties of permanent magnet and permanent magnet material in open circuit |
| CN102520379A (en) * | 2011-12-29 | 2012-06-27 | 钢铁研究总院 | Equipment and method for detecting temperature coefficient of remanence |
| CN102520379B (en) * | 2011-12-29 | 2014-03-26 | 钢铁研究总院 | Equipment and method for detecting temperature coefficient of remanence |
| CN103885009A (en) * | 2014-03-13 | 2014-06-25 | 中国计量科学研究院 | Permanent magnet temperature coefficient open-circuit measuring device and method |
| CN112269156A (en) * | 2020-10-23 | 2021-01-26 | 河北工业大学 | Permanent magnet magnetic property temperature coefficient measuring and variable temperature/high temperature permanent magnet magnetic property monitoring device |
| CN112269156B (en) * | 2020-10-23 | 2022-07-26 | 河北工业大学 | Permanent magnet magnetic property temperature coefficient measuring and variable temperature/high temperature permanent magnet magnetic property monitoring device |
| CN112730595A (en) * | 2020-12-18 | 2021-04-30 | 哈尔滨工业大学 | Magnetic flux online measurement method of permanent magnet material in high-temperature state |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |