CN103547000A - Alternating-current positive and negative twisted pair non-magnetic heating method - Google Patents
Alternating-current positive and negative twisted pair non-magnetic heating method Download PDFInfo
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- CN103547000A CN103547000A CN201310518468.5A CN201310518468A CN103547000A CN 103547000 A CN103547000 A CN 103547000A CN 201310518468 A CN201310518468 A CN 201310518468A CN 103547000 A CN103547000 A CN 103547000A
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Abstract
The invention provides an alternating-current positive and negative twisted pair non-magnetic heating method and belongs to the technology of non-magnetic heating. The alternating-current positive and negative twisted pair non-magnetic heating method comprises the following steps that a non-magnetic heating wire is folded in two in the midpoint and pair twisting is conducted on the non-magnetic heating wire, or two heating wires are twisted together in a pair twisting mode; after pair twisting, two connectors of one end are welded together, and two connectors of the other end serve as the input ends of heating current; the heating wire generated after pair twisting is evenly wound around an object to be heated, the heating wire is energized with the alternating current of over 20Hz, magnetic fields generated by the heating wire generated after pair twisting are mutually counteracted due to the fact that the directions of the magnetic fields are opposite, and therefore the purpose of zero remanence is achieved. The alternating-current positive and negative twisted pair non-magnetic heating method can meet the requirements for temperature characteristic correction and testing of a magnetic sensor, a magnetometer and the like in a low-intensity magnetic field.
Description
Technical field
The present invention relates to a kind of heating means, relate in particular to a kind ofly without magnetic heating means, belong to weak magnetic survey technical field.
Background technology
When weak magnetic sensor is carried out to calibration testing, temperature characterisitic is a very important calibration testing content wherein, therefore need in reproduction standard Magnetic Field, reappear certain temperature environment, be about to weak magnetic sensor to be tested and put into high-low temperature chamber body center, guarantee that weak magnetic sensor is also in the homogeneity range in standard Magnetic Field simultaneously.In order to guarantee uniformity and the stability of temperature in high-low temperature chamber, generally select electric heating control technology, heater strip is evenly outside around thermal insulator.Now, heater strip is equivalent to a coil, when energising is heated, can produce magnetic field; This magnetic field and standard Magnetic Field interact, and have a strong impact on the calibration effect of weak magnetic sensor.
The magnetic field that heater strip produces is to the number of turns of heater strip coiling, the intensity of heating current is relevant, and the heater strip number of turns is more, and heating current value is larger, and the magnetic field producing is larger.Take flux-gate magnetometer as example, and noise is generally lower than 1nT, even lower than 0.1nT.The magnetic field producing in general heater strip heating process can reach tens nanoteslas, even reaches thousands of nanoteslas when heating current is larger.Under this environment, can not meet the calibration condition of low-intensity magnetic field Magnetic Sensor completely.
Summary of the invention
In view of this, the invention provides the positive and negative multiple twin of a kind of interchange without magnetic heating means, the magnetic field cancellation that adopts the method heater strip can be produced, makes the changes of magnetic field in uniform magnetic field be less than 1nT, effectively solves the magnetic interference problem producing in heater strip heating process.
Described without magnetic heating means for by nonmagnetic that make, multiple twin heater strip that surface scribbles high-temperature insulating paint with the mode uniform winding of spiral on the outer circumference surface of heating chamber; Two joints of described multiple twin heater strip one end are connected, and two joints of the other end are respectively as positive pole and the negative pole of input current, and incoming frequency is alternating current more than 20Hz.
Described multiple twin heater strip is twisted together and forms in the mode of multiple twin by the identical heater strip of two length; Then by two joint welding of heater strip one end after multiple twin.
Described multiple twin heater strip, then is formed after multiple twin in central spot doubling by single heater strip.
Beneficial effect:
The positive and negative multiple twin of heater strip that this method is made non-magnetic material, and by the electrically heated mode of input AC, cancelled out each other in the magnetic field that heater strip causes, to reach the object of zero remanent magnetism; Can meet calibration, the test request of the temperature characterisitic under low-intensity magnetic field such as Magnetic Sensor, magnetometer.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of heater strip multiple twin;
Fig. 2 is heater strip coiling schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
The present embodiment provides the positive and negative multiple twin of a kind of interchange without magnetic heating means, when weak magnetic sensor is carried out to calibration testing, adopt the method reproduction ambient temperature, can effectively avoid producing disturbing magnetic field, can meet the calibration testing demand of current most low-intensity magnetic field Magnetic Sensor, magnetometer.
Be specially: get constantan wire that a surface scribbles high-temperature insulating paint as heater strip, multiple twin after this heater strip midpoint doubling, then using two joint respectively as positive pole and the negative pole of heating current input, as shown in Figure 1; Or by the identical heater strip of two length, the mode with multiple twin twists together, and then two joints of heater strip one end after multiple twin is welded together, two joints of the other end are respectively as positive pole and the negative pole of heating current input.By the heater strip after multiple twin with the mode uniform winding of spiral on the outer circumference surface of heating chamber, as shown in Figure 2, can be according to spacing and the number of turn of required heating power adjustment coiling.
When weak magnetic sensor is carried out to calibration testing, weak magnetic sensor to be detected is placed in described heating chamber.Then at the current input terminal of heater strip, input alternating current more than 20Hz, heater strip heating, makes the temperature in heating chamber reach necessary requirement.Due to heater strip multiple twin, the size of current of passing through on two sections of heater strips equates, opposite direction, the magnetic field producing is also equal and opposite in direction, opposite direction, thereby can cancel out each other, AC electric-heating can avoid producing direct current disturbing magnetic field simultaneously, the remnant field that heater strip is produced is zero substantially, has effectively eliminated disturbing magnetic field, guarantees the reliability of calibration.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. exchange positive and negative multiple twin without magnetic heating means, it is characterized in that, by nonmagnetic that make, multiple twin heater strip that surface scribbles high-temperature insulating paint with the mode uniform winding of spiral on the outer circumference surface of heating chamber; And be alternating current more than 20Hz to incoming frequency in multiple twin heater strip.
2. interchange according to claim 1 is positive and negative in magnetic heating means, it is characterized in that: described multiple twin heater strip is twisted together and forms in the mode of multiple twin by the identical heater strip of two length; Then by two end points welding of heater strip one end after multiple twin.
3. interchange according to claim 1 is positive and negative in magnetic heating means, it is characterized in that: described multiple twin heater strip, then is formed after multiple twin in midpoint doubling by single heater strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310518468.5A CN103547000A (en) | 2013-10-28 | 2013-10-28 | Alternating-current positive and negative twisted pair non-magnetic heating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310518468.5A CN103547000A (en) | 2013-10-28 | 2013-10-28 | Alternating-current positive and negative twisted pair non-magnetic heating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103547000A true CN103547000A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310518468.5A Pending CN103547000A (en) | 2013-10-28 | 2013-10-28 | Alternating-current positive and negative twisted pair non-magnetic heating method |
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| CN (1) | CN103547000A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467822A (en) * | 2015-12-23 | 2016-04-06 | 北京航天控制仪器研究所 | Small CPT atomic clock physical system |
| CN108322950A (en) * | 2017-12-27 | 2018-07-24 | 中国船舶重工集团公司第七0研究所 | A kind of electrical heating method of no magnetic |
| CN108882394A (en) * | 2018-06-26 | 2018-11-23 | 中国原子能科学研究院 | A kind of ohm of formula is without magnetic heating structure |
| CN116207927A (en) * | 2023-05-05 | 2023-06-02 | 苏州苏磁智能科技有限公司 | Magnetic suspension motor and magnetic suspension equipment of twisted pair outgoing line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904851A (en) * | 1972-10-05 | 1975-09-09 | Separex Sa | Electric heater for heating a fluid medium |
| EP0619689A1 (en) * | 1993-04-09 | 1994-10-12 | Quartz Tubing Inc. | Heating coil structures |
| CN202889665U (en) * | 2012-11-20 | 2013-04-17 | 东北石油大学 | Electric heating device for weak magnetic air chamber |
-
2013
- 2013-10-28 CN CN201310518468.5A patent/CN103547000A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904851A (en) * | 1972-10-05 | 1975-09-09 | Separex Sa | Electric heater for heating a fluid medium |
| EP0619689A1 (en) * | 1993-04-09 | 1994-10-12 | Quartz Tubing Inc. | Heating coil structures |
| CN202889665U (en) * | 2012-11-20 | 2013-04-17 | 东北石油大学 | Electric heating device for weak magnetic air chamber |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467822A (en) * | 2015-12-23 | 2016-04-06 | 北京航天控制仪器研究所 | Small CPT atomic clock physical system |
| CN105467822B (en) * | 2015-12-23 | 2018-04-27 | 北京航天控制仪器研究所 | A kind of Small-sized C PT atomic clock physical systems |
| CN108322950A (en) * | 2017-12-27 | 2018-07-24 | 中国船舶重工集团公司第七0研究所 | A kind of electrical heating method of no magnetic |
| CN108882394A (en) * | 2018-06-26 | 2018-11-23 | 中国原子能科学研究院 | A kind of ohm of formula is without magnetic heating structure |
| CN116207927A (en) * | 2023-05-05 | 2023-06-02 | 苏州苏磁智能科技有限公司 | Magnetic suspension motor and magnetic suspension equipment of twisted pair outgoing line |
| CN116207927B (en) * | 2023-05-05 | 2023-07-28 | 苏州苏磁智能科技有限公司 | Magnetic suspension motor and magnetic suspension equipment of twisted pair outgoing line |
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Application publication date: 20140129 |