CN203775436U - Alternating-current positive and negative twisted-pair non-magnetic heating device - Google Patents
Alternating-current positive and negative twisted-pair non-magnetic heating device Download PDFInfo
- Publication number
- CN203775436U CN203775436U CN201320670395.7U CN201320670395U CN203775436U CN 203775436 U CN203775436 U CN 203775436U CN 201320670395 U CN201320670395 U CN 201320670395U CN 203775436 U CN203775436 U CN 203775436U
- Authority
- CN
- China
- Prior art keywords
- magnetic
- heater strip
- multiple twin
- heating
- negative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
The utility model provides an alternating-current positive and negative twisted-pair non-magnetic heating device, relating to a non-magnetic heating technology. A non-magnetic heating wire is folded at the midpoint and then the two halves are twisted together, or two heating wires are twisted together in a pair twisting mode. After the pair twisting, the two end points of one end are welded together, and the two end points of the other end serve as the input ends of heating current. The heating wire(s) after the pair twisting is(are) evenly wound around the exterior of a heating cavity, and energized with alternating current of over 20Hz. Magnetic fields generated by the heating wire(s) after the pair twisting offset each other due to the fact that the directions of the magnetic fields are exactly opposite, and therefore the purpose of having zero remanence is achieved. The alternating-current positive and negative twisted-pair non-magnetic heating device 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 utility model relates to a kind of heater, relates in particular to a kind ofly without magnetic heater, belongs 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.
Utility model content
In view of this, the utility model provides the positive and negative multiple twin of a kind of interchange without magnetic heater, the magnetic field cancellation that adopts this device 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.
Describedly without magnetic heater, comprise multiple twin heater strip and heating chamber, described multiple twin heater strip is that non-magnetic material is made and surface scribbles high-temperature insulating paint; Heating chamber is hollow column construction; Multiple twin heater strip with the mode uniform winding of spiral on the outer circumference surface of heating chamber; During heating, in described multiple twin heater strip, incoming frequency is not less than the alternating current of 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; Two of heater strip one end end points welding after multiple twin, two end points of the other end are respectively as positive pole and the negative pole of input current.
Described multiple twin heater strip, then is formed after multiple twin in midpoint doubling by single heater strip.
Beneficial effect:
The positive and negative multiple twin of heater strip that non-magnetic material is made, and by the electrically heated mode of input AC, cancelled out each other in the magnetic field that heater strip causes; While incoming frequency is not less than 20Hz AC electric-heating and can avoids producing direct current disturbing magnetic field, and the remnant field that heater strip is produced is zero substantially, can effectively eliminate disturbing magnetic field, guarantees the reliability of calibration.
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 utility model is elaborated.
The present embodiment provides the positive and negative multiple twin of a kind of interchange without magnetic heater, 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 end points 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 end points of heater strip one end after multiple twin is welded together, two end points 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 preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (3)
1. exchange positive and negative multiple twin without a magnetic heater, it is characterized in that, comprise multiple twin heater strip and heating chamber, described multiple twin heater strip is that non-magnetic material is made and surface scribbles high-temperature insulating paint; Heating chamber is hollow column construction; Multiple twin heater strip with the mode uniform winding of spiral on the outer circumference surface of heating chamber; During heating, in described multiple twin heater strip, incoming frequency is not less than the alternating current of 20Hz.
2. interchange according to claim 1 is positive and negative in magnetic heater, 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; Two of heater strip one end end points welding after multiple twin, two end points of the other end are respectively as positive pole and the negative pole of input current.
3. interchange according to claim 1 is positive and negative in magnetic heater, 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 |
|---|---|---|---|
| CN201320670395.7U CN203775436U (en) | 2013-10-28 | 2013-10-28 | Alternating-current positive and negative twisted-pair non-magnetic heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320670395.7U CN203775436U (en) | 2013-10-28 | 2013-10-28 | Alternating-current positive and negative twisted-pair non-magnetic heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203775436U true CN203775436U (en) | 2014-08-13 |
Family
ID=51292576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320670395.7U Expired - Fee Related CN203775436U (en) | 2013-10-28 | 2013-10-28 | Alternating-current positive and negative twisted-pair non-magnetic heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203775436U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475015A (en) * | 2018-11-21 | 2019-03-15 | 中国船舶重工集团公司第七0七研究所 | A kind of cage for magnetic resonance gyroscope instrument is without magnetic heater |
| CN110161439A (en) * | 2019-05-20 | 2019-08-23 | 华中科技大学 | A kind of heating device of HIGH-TEMPERATURE NMR PROBE and its application |
-
2013
- 2013-10-28 CN CN201320670395.7U patent/CN203775436U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475015A (en) * | 2018-11-21 | 2019-03-15 | 中国船舶重工集团公司第七0七研究所 | A kind of cage for magnetic resonance gyroscope instrument is without magnetic heater |
| CN109475015B (en) * | 2018-11-21 | 2021-05-07 | 中国船舶重工集团公司第七0七研究所 | Cage type non-magnetic heater for nuclear magnetic resonance gyroscope |
| CN110161439A (en) * | 2019-05-20 | 2019-08-23 | 华中科技大学 | A kind of heating device of HIGH-TEMPERATURE NMR PROBE and its application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106916928A (en) | A kind of amorphous or the heat treatment method of nanocrystalline material for magnetic screen piece | |
| CN103547000A (en) | Alternating-current positive and negative twisted pair non-magnetic heating method | |
| CN102981111B (en) | Interturn insulation detector for dry air reactor | |
| CN203775436U (en) | Alternating-current positive and negative twisted-pair non-magnetic heating device | |
| JP2014175398A (en) | High frequency transformer | |
| CN109596893A (en) | A kind of high-frequency transformer coils the number of turns test method | |
| CN104215815A (en) | Leakage current monitoring device of lightning arrester | |
| CN104263897A (en) | Drawing and annealing system for flux cored wire production process | |
| CN102423751A (en) | Solidification device for welding seam coating of metal can body | |
| CN104319082A (en) | Reactor | |
| CN107132494B (en) | A kind of GMI sensor probe and preparation method thereof based on round amorphous wire | |
| CN104166117B (en) | High-current synthesis circuit of electronic current transformer | |
| CN202994962U (en) | Turn-to-turn insulation detector for dry air reactor | |
| CN104287409A (en) | Electric hair dryer | |
| JP6716371B2 (en) | System and method for measuring magnetic properties of induction heating wires | |
| CN205177566U (en) | High -frequency transformer with single -phase high -power loop construction | |
| CN204044346U (en) | A kind of planar radio frequency coils for nuclear magnetic resonance | |
| CN207381238U (en) | A kind of taken using permalloy for the trapezoidal multi-coil group of material can mutual inductor | |
| CN204116587U (en) | The big current synthesis loop of electronic current mutual inductor | |
| CN109975591B (en) | AC pincerlike multipurpose meter and coil winding method thereof | |
| CN204882679U (en) | Flexible differential current sensor that low temperature floats | |
| Zhao et al. | Two methods for BCI probe to improve the high frequency performance | |
| JP2006279214A (en) | Signal-injecting/extracting apparatus | |
| CN104215808A (en) | Diverter used for measuring alternating current | |
| CN104849678B (en) | The probe of alternating magnetic field ionization meter a kind of electric discharge suitable for low pressure very high frequency(VHF) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140813 Termination date: 20171028 |