CN103137284A - Nonmagnetic thermal demagnetization furnace - Google Patents
Nonmagnetic thermal demagnetization furnace Download PDFInfo
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- CN103137284A CN103137284A CN2011103865550A CN201110386555A CN103137284A CN 103137284 A CN103137284 A CN 103137284A CN 2011103865550 A CN2011103865550 A CN 2011103865550A CN 201110386555 A CN201110386555 A CN 201110386555A CN 103137284 A CN103137284 A CN 103137284A
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Abstract
The invention provides a nonmagnetic thermal demagnetization furnace. The nonmagnetic thermal demagnetization furnace comprises a hearth (4), wherein the hearth (4) is used for containing to-be-demagnetization samples. An electrothermal furnace wire (101) is installed in the hearth (4), wherein the furnace wire (101) can produce a null electromagnetic field in electricity. The disturbing magnetic field caused by energizing currents in electric heating is avoided.
Description
Technical field
The present invention relates to a kind of nonmagnetic hot demagnetization kiln.
Background technology
Hot demagnetization kiln is in physics, chemistry, and materialogy, geophysics etc. have purposes very widely in the field relevant with magnetisable material.Be used for material is heated, reduce or eliminate the magnetic of material.In addition, in the preparation process of chemical material sample, often utilize the sintering furnace heating to generate specific material.
The demagnetization principle of hot demagnetization kiln is to utilize heating-up temperature to raise to destroy magnetic domain ordered arrangement in magnetisable material, makes macroscopic view upward offset whole magnetic, reaches demagnetization effectiveness.Because the magnetisable material of variable grain size and arrangement mode has different unblocking temperature (namely destroying the temperature that ordered magnetism is arranged), in order to understand the process of whole demagnetization, satisfy some special research needs, the particularly correlative study of material magnetics and paleomagnetism, need the details in extraction of substance magnetization or demagnetization action process, need to carry out the progressively heat demagnetization operation of heat temperature raising to material.
The heat demagnetization is different from the alternating demagnetization part and is, alternating demagnetization is magnetisable material to be carried out forward and reverse magnetization in alternating magnetic field, makes the forward and reverse magnetized magnetic moment of material cancel out each other and reaches demagnetization effectiveness.And the heat demagnetization utilizes the orderly magnetization that adds heat damage material magnetic moment, thermal agitation to make magnetisable material in the chaotic arrangement of all directions, thereby reaches demagnetization effectiveness on the whole.Therefore hot demagnetization effectiveness is better comparatively speaking.But a key takeaway of hot demagnetization kiln is that magnetisable material need to heat in non-magnetic environment, otherwise can make on the contrary material obtain thermoremanent magnetism and material is magnetized.
More existing hot demagnetization kiln instrument or material sintering furnace devices on the market, its major function utilizes electric furnace heating wire that magnetisable material material or sample are heated in magnetic screen with exactlying, then cuts off electric current cooling in nearly zero magnetic field, reaches demagnetization effectiveness.Although be placed on although its sixty-four dollar question or shortcoming are the material of required demagnetization or sample the processing of carrying out whole demagnetization process in zero magnetic field, but owing to utilizing electric furnace heating wire to heat, and common electric furnace heating wire is switched on when heating, because the influence of peak current can produce magnetic field, thereby the whole zero magnetic effect in the destruction demagnetization kiln finally causes demagnetization effectiveness undesirable.
Summary of the invention
For the problem that exists in correlation technique, the object of the present invention is to provide a kind of nonmagnetic hot demagnetization kiln, do not produce the disturbing magnetic field that causes because of electrical current during the energising heating.
For achieving the above object, the invention provides a kind of nonmagnetic hot demagnetization kiln, have to hold the burner hearth of sample sample to be demagnetized, produce the electrothermal furnace silk of null electromagnetic field when being provided with energising in described burner hearth.
Preferably, burner hearth is cylindrical structure, has the heat-resistant insulating layer that forms inboard wall of burner hearth and the thermal insulation layer that forms hearth outer wall, the electrothermal furnace silk along the burner hearth axial reciprocating be embedded in heat-resistant insulating layer, thermal insulation layer is wrapped on the outer wall of described heat-resistant insulating layer.
Preferably, be wound with cooling water pipe on the outer wall of thermal insulation layer, to form the cooling water pipe layer.
Preferably, nonmagnetic hot demagnetization kiln also comprises the magnetic field shielding cylinder, the magnetic field shielding cylinder has: the inner core that is formed by electromagnetic-field-shielded layer, the urceolus that is formed by the shielding in of magnetostatic field layer and the cold air duct that is formed by the space between inner core and urceolus, burner hearth is contained in inner core, and cold air duct communicates with the furnace chamber that is surrounded by inboard wall of burner hearth in a bottom of inner core.
Preferably, between the inner core and described cooling water pipe layer of magnetic field shielding cylinder, also being provided with when energising provides the field coil that adds of electromagnetic field in the furnace chamber.
Preferably, electromagnetic-field-shielded layer is single layer structure, and the shielding in of magnetostatic field layer is the three-decker that is superimposed.
Preferably, the electrothermal furnace silk is by internal layer, intermediate layer and outer three layers of coaxial stove silk that form, the intermediate layer is insulating barrier, one in internal layer and skin is conductive layer, another is electrothermal layer, and at an end of coaxial stove silk, outer directly wrapping inner layer also forms with it electrical connection, other parts at coaxial stove silk comprise the other end, and internal layer and skin are kept apart by the intermediate layer.
Preferably, nonmagnetic hot demagnetization kiln also comprises: controller; Temperature-sensitive sticker feeds back to controller after being used for measuring the temperature in furnace chamber and converting the temperature value that records to signal, and controller is according to the magnitude of current in the signal change electrothermal furnace silk of temperature-sensitive sticker feedback, so that the temperature of furnace chamber reaches desired value.
Preferably, nonmagnetic hot demagnetization kiln also comprises: control the choke valve of water flow velocity in cooling water pipe, controller is according to the aperture of the signal controlling choke valve of described temperature-sensitive sticker feedback.
Preferably, nonmagnetic hot demagnetization kiln also comprises: the magnetic field sensor, feed back to described controller after being used for measuring the magnetic field intensity in furnace chamber and converting the magnetic field intensity that records to signal, controller changes according to the signal of magnetic field sensor feedback the magnitude of current that adds in field coil, so that controlled additional electrical magnetic field to be provided to furnace chamber.
Than prior art, the present invention has following beneficial effect:
(1) due to the electrothermal furnace silk that is provided with when energising and produces null electromagnetic field in burner hearth, the heating element take this electrothermal furnace silk as nonmagnetic hot demagnetization kiln, thus do not produce the disturbing magnetic field that causes because of electrical current when the energising heating; And stoped the generation of electromagnetic radiation due to the electrothermal furnace silk, and make the electric conversion rate of electrothermal furnace silk improve, namely the efficiency of heating surface is high.
(2) because burner hearth has interior outer double-layer structure, internal layer is that the heat-resistant insulating layer skin is thermal insulation layer, the electrothermal furnace silk along the burner hearth axial reciprocating be located in heat-resistant insulating layer, avoided the exposed demagnetization sample of directly treating in burner hearth of electrothermal furnace silk to heat, thereby effectively reduce the Blackbody Radiation Quantity that sample is subject to, make burner hearth inner (being furnace chamber) obtain better temperature uniformity, and thermal insulation layer make nonmagnetic hot demagnetization kiln thermal loss when heating little.
(3) burner hearth is contained in the magnetic field shielding cylinder, the magnetic field shielding cylinder adopts electromagnetic-field-shielded layer and shielding in of magnetostatic field layer to make glitch-free zero magnetic field condition of maintenance in furnace chamber.
(4) also accommodate in the magnetic field shielding cylinder and add field coil, when needing, add field coil and can produce uniform controllable magnetic field.
(5) burner hearth and add and be provided with the cooling water pipe layer between field coil; this cooling water pipe layer is made of the cooling water pipe that is wrapped on hearth outer wall; utilize the cooling water pipe layer to carry out overtemperature protection to adding field coil and electromagnetic-field-shielded layer, guarantee by adding controllable magnetic field that field coil provides and the stability of electromagnetic-field-shielded layer effect.
(6) pass into cold wind by cold air duct in furnace chamber, so that the furnace chamber that is surrounded by burner hearth is carried out cooling processing, thereby cooling processing efficient is high.
(7) the present invention is provided with temperature-sensitive sticker (for example temp probe) in furnace chamber, real time temperature in the furnace chamber that senses in response to temperature-sensitive sticker and adjust the electrical current of electrothermal furnace silk, thus improve the heating effect of electrothermal furnace silk.
(8) adopt the visualization interface interactive system, make the easy to operate simple of nonmagnetic hot demagnetization kiln.
Description of drawings
Fig. 1 is the Structure of cross section schematic diagram of the nonmagnetic hot demagnetization kiln of the present invention;
Fig. 2 is the vertical section structural representation of the nonmagnetic hot demagnetization kiln of the present invention;
Fig. 3 is the fundamental diagram of the nonmagnetic hot demagnetization kiln of the present invention;
Fig. 4 is the operation interface of the nonmagnetic hot demagnetization kiln of the present invention;
Fig. 5 is the axial cutaway view of the single electrothermal furnace silk that adopts in the nonmagnetic hot demagnetization kiln of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described.
Referring to Fig. 1 and Fig. 2, the present invention is nonmagnetic, and hot demagnetization kiln has: magnetic field shielding cylinder 1, be contained in burner hearth 4 in magnetic field shielding cylinder 1, be wound with cooling water pipe 31 (to form cooling water pipe layer 3) on the lateral wall of burner hearth 4, be provided with between magnetic field shielding cylinder 1 and cooling water pipe layer 3 and add field coil 2.Burner hearth 4 surrounds furnace chamber A, to hold sample sample to be demagnetized.
In order not produce the disturbing magnetic field that causes because of electrical current when energising is heated, the present invention is nonmagnetic, and hot demagnetization kiln is provided with the electrothermal furnace silk 101 that produces null electromagnetic field when switching in burner hearth 4.Particularly, illustrate as Fig. 1 and 2, burner hearth 4 is cylindrical structure, have the heat-resistant insulating layer 41 that forms inboard wall of burner hearth and the thermal insulation layer 43 that forms hearth outer wall, electrothermal furnace silk 101 along the burner hearth axial reciprocating be embedded in heat-resistant insulating layer 41 and (be embedded in outer wall shown in figure), and thermal insulation layer 43 is wrapped on the outer wall of heat-resistant insulating layer 41.Electrothermal furnace silk 101 thus arranged has been avoided the exposed demagnetization sample of directly treating in burner hearth of electrothermal furnace 101 to heat, thereby has effectively been reduced the Blackbody Radiation Quantity that sample is subject to, and makes burner hearth inner (being furnace chamber) obtain better temperature uniformity.And the thermal insulation layer of burner hearth 4 makes nonmagnetic hot demagnetization kiln thermal loss when heating little.
Continuation is referring to Fig. 1 and Fig. 2, the cold air duct 5 that in the present invention, magnetic field shielding cylinder 1 has inner core and urceolus and formed by space between inner/outer tube, and described inner core has electromagnetic-field-shielded layer 11 to form, and described urceolus is formed by shielding in of magnetostatic field layer 13.Burner hearth 4 namely is contained in inner core, and under the situation that does not adopt furnace chamber A complementary field when adding field coil 2, magnetic field shielding cylinder 1 provides nearly zero magnetic field environment for furnace chamber A.As can be seen from Figure 2, cold air duct 5 communicates with furnace chamber A in the internal barrel bottom of magnetic field shielding cylinder 1.The cold wind that cold air duct 5 blasts air blast 8 is introduced in furnace chamber A with sample cooling to be demagnetized, thereby makes the cooling processing efficient of nonmagnetic hot demagnetization kiln high.Preferably, electromagnetic-field-shielded layer 11 is single layer structure, is made by the high conductivity material; The three-decker of shielding in of magnetostatic field layer 13 for being superimposed makes to shield external magnetic field by high-permeability material.
Further, as can be seen from Figure 1: add field coil 2 and be located between the inner core and cooling water pipe layer 3 of magnetic field shielding cylinder 1, control the power on/off and the magnitude of current that add field coil 2 and can provide controlled Uniform Electromagnetic Field in furnace chamber A.As can be seen from Figure 2; cooling water pipe layer 3 is at the outer wall of burner hearth thermal insulation layer 43 and add between field coil 2; utilize 3 pairs, cooling water pipe layer to add field coil 2 and electromagnetic-field-shielded layer 43 carries out overtemperature protection, guarantee by the stability in the controllable electric magnetic field that adds that field coil 2 provides and the stability of shield effectiveness that guarantees the electromagnetic-field-shielded layer of magnetic field shielding cylinder 1.
Referring to Fig. 3, the present invention is nonmagnetic, and hot demagnetization kiln also comprises the control system 25 with controller 6.In order to improve the heating effect of nonmagnetic hot demagnetization kiln, temperature-sensitive sticker 9 is installed in furnace chamber A, temperature-sensitive sticker 9 feeds back to controller 6 after being used for measuring the temperature in furnace chamber and converting the temperature value that records to signal, controller 6 is according to the magnitude of current in the signal change electrothermal furnace silk 101 of temperature-sensitive sticker 6 feedbacks, so that the temperature of furnace chamber A reaches desired value, improved thus the heating effect of nonmagnetic hot demagnetization kiln.Add the overtemperature protection of field coil 2 and electromagnetic-field-shielded layer 11 in order to control 3 pairs, cooling water pipe layer; can be provided with the choke valve (not shown) in the cooling water pipe 31 of cooling water pipe layer 3; the furnace chamber temperature that controller 6 detects in real time according to temperature-sensitive sticker 9 changes the aperture of choke valve, thereby changes the water velocity of cooling water.Similarly, can establish the choke valve 20 of controlled wind speed in the low temperature valve passage, controller 6 is controlled the aperture of choke valve 20 to regulate wind speed; Perhaps, also air blast 8 can be made as the variable air blast, controller 6 is controlled air blast 8 can regulate cooling air flow in cold air duct 5.Apply the situation in additional electrical magnetic field to furnace chamber A to adding field coil 2, controlled in order to make described additional electrical magnetic field, be provided with magnetic field sensor 10 in furnace chamber A, magnetic field sensor 10 feeds back to controller 6 after measuring the magnetic field intensity in furnace chamber A and converting the magnetic field intensity that records to signal, controller 6 changes according to the signal of magnetic field sensor 10 feedbacks the magnitude of current that adds in field coil 2, so that described additional electrical magnetic field is controlled.In the present invention shown in Fig. 3, control system 25 also comprises the memory 23 that is electrically connected to controller and interface alternation system 24, user B arranges the control parameter by interface alternation system 24, controller 6 obtains parameters with as target component or setup parameter from interface alternation system 24, wherein the real-time parameter of nonmagnetic hot demagnetization kiln is also shown by interface alternation system 24, and the visualization interface interactive system makes the easy to operate simple of nonmagnetic hot demagnetization kiln.As shown in Figure 3, first sample 21 is positioned in the specimen holder 22 of nonmagnetic high temperature resistance and high strength, specimen holder 22 is sent in burner hearth 4, then by the interface alternation system, control parameter, for example heating-up temperature are set, the rate of heat addition, temperature retention time, then the series of parameters such as field intensity requirement click start button, controller 6 obtains parameters from interface alternation system 24, and nonmagnetic hot demagnetization kiln is started working.
Fig. 4 shows the operation interface of the interface alternation system 24 of the nonmagnetic hot demagnetization kiln of the present invention, and operation interface has real time data viewing area, setting and controlled area.The real time data viewing area is used for showing the real-time parameter of nonmagnetic hot demagnetization kiln, arranges with the controlled area to be used for for user's input control parameter.
Referring to Fig. 5, show the structural representation of the electrothermal furnace silk 101 that uses in the present invention.Electrothermal furnace silk 101 is that intermediate layer 103 is insulating barrier by internal layer 104, intermediate layer 103 and the outer 102 coaxial stove silks of three layers of forming, and one in internal layer 104 and outer 102 is conductive layer, and another is electrothermal layer.At an end D of coaxial stove silk, outer 102 direct wrapping inner layer 104 also form with it electrical connection; Remainder at coaxial stove silk comprises other end C, and internal layer 104 and outer 102 is kept apart by intermediate layer 103.In when to electrothermal furnace silk energising heating, extrinsic current is coaxial oppositely, and in the electrothermal furnace silk, equivalent current is zero, thereby the electrothermal furnace silk externally produces null electromagnetic field in heating process.Stoped the generation of electromagnetic radiation due to the electrothermal furnace silk, so the raising of the electric conversion rate of electrothermal furnace silk, namely the efficiency of heating surface is high.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. nonmagnetic hot demagnetization kiln has to hold the burner hearth (4) of sample to be demagnetized, and it is characterized in that, produces the electrothermal furnace silk (101) of null electromagnetic field when being provided with energising in described burner hearth (4).
2. nonmagnetic hot demagnetization kiln according to claim 1, is characterized in that,
Described burner hearth (4) is cylindrical structure, has the heat-resistant insulating layer (41) that forms inboard wall of burner hearth and the thermal insulation layer (43) that forms hearth outer wall,
Wherein, described electrothermal furnace silk (101) along described burner hearth (4) axial reciprocating be embedded in described heat-resistant insulating layer (41), described thermal insulation layer (43) is wrapped on the outer wall of described heat-resistant insulating layer (41).
3. nonmagnetic hot demagnetization kiln described according to right 2, is characterized in that,
Be wound with cooling water pipe (31) on the outer wall of described thermal insulation layer (43), to form cooling water pipe layer (3).
4. nonmagnetic hot demagnetization kiln described according to right 3, is characterized in that,
Also comprise magnetic field shielding cylinder (1), described magnetic field shielding cylinder (1) has: the inner core that is formed by electromagnetic-field-shielded layer (11), the urceolus that is formed by shielding in of magnetostatic field layer (13) and the cold air duct (5) that is formed by the space between described inner core and urceolus
Wherein, described burner hearth (4) is contained in described inner core, and described cold air duct (5) communicates with the furnace chamber that is surrounded by described inboard wall of burner hearth (A) in a bottom of described inner core.
5. nonmagnetic hot demagnetization kiln described according to right 4, is characterized in that,
Between the inner core and described cooling water pipe layer (3) of described magnetic field shielding cylinder (1), what be provided with also that when energising provide electromagnetic field in the described furnace chamber (A) adds field coil (2).
6. nonmagnetic hot demagnetization kiln described according to right 4, is characterized in that,
Described electromagnetic-field-shielded layer (11) is single layer structure, the three-decker of described shielding in of magnetostatic field layer (13) for being superimposed.
7. the described nonmagnetic hot demagnetization kiln of any one according to claim 1-6, is characterized in that,
Described electrothermal furnace silk (101) is three layers of coaxial stove silk that formed by internal layer (104), intermediate layer (103) and outer (102), described intermediate layer (103) is insulating barrier, one in described internal layer (104) and outer (102) is conductive layer, another is electrothermal layer
Wherein, an end (D) at described coaxial stove silk, described skin (102) directly wraps up described internal layer (104) and forms with it and is electrically connected to, other parts at described coaxial stove silk comprise the other end (C), and described internal layer (104) and outer (102) are kept apart by described intermediate layer (103).
8. nonmagnetic hot demagnetization kiln according to claim 5, is characterized in that, also comprises:
Controller (6); And
Temperature-sensitive sticker (9) feeds back to described controller (6) after being used for measuring the temperature in described furnace chamber (A) and converting the temperature value that records to signal,
Wherein, described controller (6) is according to the magnitude of current in the signal described electrothermal furnace silk of change (101) of described temperature-sensitive sticker feedback, so that the temperature of described furnace chamber (A) reaches desired value.
9. nonmagnetic hot demagnetization kiln according to claim 8, is characterized in that, also comprises:
Control the choke valve of water flow velocity in described cooling water pipe (31), wherein said controller (6) is according to the aperture of the described choke valve of signal controlling of described temperature-sensitive sticker feedback.
10. nonmagnetic hot demagnetization kiln according to claim 9, is characterized in that, also comprises:
Magnetic field sensor (10) feeds back to described controller (6) after being used for measuring the magnetic field intensity in furnace chamber (A) and converting the magnetic field intensity that records to signal,
Wherein, described controller (6) changes the described magnitude of current that adds in field coil (2) according to the signal of described magnetic field sensor (10) feedback, to provide controlled additional electrical magnetic field to described furnace chamber (A).
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| CN201110386555.0A CN103137284B (en) | 2011-11-29 | 2011-11-29 | Nonmagnetic thermal demagnetization furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430770A (en) * | 2015-10-30 | 2016-03-23 | 北京航天控制仪器研究所 | Multilayer nonmagnetic heating device used for miniature nuclear magnetic resonance gyroscope |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5426279A (en) * | 1993-06-21 | 1995-06-20 | Dasgupta; Sankar | Heating rate regulator |
| CN101276667A (en) * | 2008-01-24 | 2008-10-01 | 宁波韵升股份有限公司 | Method and apparatus for stew demagnetizing sintered Nd iron boron permanent magnet |
| CN101512278A (en) * | 2005-06-01 | 2009-08-19 | Mrl工业公司 | Magnetic field reduction resistive heating elements |
| CN101593599A (en) * | 2009-04-01 | 2009-12-02 | 西安理工大学 | A kind of electromagnetic field device of large-scale production of giant magnetic materials |
| CN102083247A (en) * | 2011-01-24 | 2011-06-01 | 吉林大学 | Electrical heating body with temperature measuring function |
| CN102202435A (en) * | 2011-04-11 | 2011-09-28 | 苏阳东 | Electromagnetic heating device with cooling cavity |
| CN202373400U (en) * | 2011-11-29 | 2012-08-08 | 中国科学院地质与地球物理研究所 | Nonmagnetic thermal demagnetization furnace |
-
2011
- 2011-11-29 CN CN201110386555.0A patent/CN103137284B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5426279A (en) * | 1993-06-21 | 1995-06-20 | Dasgupta; Sankar | Heating rate regulator |
| CN101512278A (en) * | 2005-06-01 | 2009-08-19 | Mrl工业公司 | Magnetic field reduction resistive heating elements |
| CN101276667A (en) * | 2008-01-24 | 2008-10-01 | 宁波韵升股份有限公司 | Method and apparatus for stew demagnetizing sintered Nd iron boron permanent magnet |
| CN101593599A (en) * | 2009-04-01 | 2009-12-02 | 西安理工大学 | A kind of electromagnetic field device of large-scale production of giant magnetic materials |
| CN102083247A (en) * | 2011-01-24 | 2011-06-01 | 吉林大学 | Electrical heating body with temperature measuring function |
| CN102202435A (en) * | 2011-04-11 | 2011-09-28 | 苏阳东 | Electromagnetic heating device with cooling cavity |
| CN202373400U (en) * | 2011-11-29 | 2012-08-08 | 中国科学院地质与地球物理研究所 | Nonmagnetic thermal demagnetization furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430770A (en) * | 2015-10-30 | 2016-03-23 | 北京航天控制仪器研究所 | Multilayer nonmagnetic heating device used for miniature nuclear magnetic resonance gyroscope |
| CN105430770B (en) * | 2015-10-30 | 2018-08-21 | 北京航天控制仪器研究所 | A kind of multilayer for miniature nuclear magnetic resonance gyroscope is without magnetic heating device |
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