CN201109787Y - Two-phase concentric winding ladle furnace bottom electromagnetic stirrer - Google Patents
Two-phase concentric winding ladle furnace bottom electromagnetic stirrer Download PDFInfo
- Publication number
- CN201109787Y CN201109787Y CNU2007200651099U CN200720065109U CN201109787Y CN 201109787 Y CN201109787 Y CN 201109787Y CN U2007200651099 U CNU2007200651099 U CN U2007200651099U CN 200720065109 U CN200720065109 U CN 200720065109U CN 201109787 Y CN201109787 Y CN 201109787Y
- Authority
- CN
- China
- Prior art keywords
- iron core
- coil
- phase
- magnetic
- winding
- 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 - Lifetime
Links
- 238000004804 winding Methods 0.000 title claims abstract description 28
- 238000009847 ladle furnace Methods 0.000 title claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000006698 induction Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
The utility model relates to a double-phase concentric winding ladle stove bottom electromagnetic agitator. The utility model discloses a: the electromagnetic stirrer iron core is arranged on the arc surface, the core teeth of the iron core are uniformly distributed upwards, the magnetic yoke is positioned at the lower part of the iron core, the coils are alternately embedded in the core tooth grooves, the magnetic circuit of the iron core is set to be open, and the metal melt is stirred by forming a traveling wave magnetic field; two-phase concentric winding coils are adopted, and the coil windings are arranged along the arc-shaped surface of the iron core and are used for forming a traveling wave magnetic field to drive molten metal to move directionally; the iron core and the coil are both arranged in a shell. The utility model discloses stirring power can be adjusted wantonly between 0 ~ 100%, and the stirring direction can change at any time. The stirrer is arranged on the bottom surface of the ladle furnace, and the stirrer is not in direct physical contact with the furnace body; the electromagnetic stirrer can run at any time, is simple to operate, can be manually operated and also can run automatically, and the installation and debugging time of the equipment is very short; the reliability of the electromagnetic stirrer is high, and the operation cost is low.
Description
Technical field
The utility model relates to metallurgical melting magnetic stirrer, refers in particular to magnetic stirrer at the bottom of the concentric winding ladle furnace of a kind of two-phase.
Background technology
Induction stirring at the bottom of the ladle furnace (LF-EMS) can realize that the whole of molten bath effectively stirs, and guarantees that simultaneously slag blanket is not destroyed.The different needs concise at ladle can adopt obstructed stirring intensity and mode.Adopt the ladle electromagnetic agitating technology can reduce running cost, improve the safe reliability of operation, and provide best and stable operational condition, guarantee the normal operation of logistics producing the high quality steel grade.The cost of investment of induction stirring is higher than the stirring of blowing, but its payback period is usually in 1 to 2 year.
Summary of the invention
The purpose of this utility model is improved, is innovated at shortcoming that exists in the background technology and problem, and magnetic stirrer at the bottom of the concentric winding ladle furnace of a kind of two-phase is provided.
The technical solution of the utility model is: construct a kind of magnetic stirrer structure that is arranged on the smelting furnace bottom, be characterized in that it comprises:
The magnetic stirrer iron core that arc is provided with, uniform on the core teeth directional of iron core, yoke is positioned at mandrel lower, and coil is alternate to be embedded in the core teeth groove, and iron circuit is set to open circuit, stirs molten metal with forming travelling-magnetic-field;
Adopt the concentric winding coil of two-phase, coil winding is provided with the iron core arc, is used to form directed the moving of travelling-magnetic-field drive molten metal;
Described iron core and coil all are arranged in the housing.
The utility model is provided with magnetic stirrer in the smelting furnace bottom, ladle induction stirring most important character is to realizing whole violent stirring and mixing to the molten bath, guaranteeing simultaneously that slag blanket is not destroyed prevents secondary oxidation of steel, power of agitator can be regulated arbitrarily between 0～100%, and mixing direction can change at any time.
Ladle induction stirring agitator is installed on the ladle furnace bottom surface, and agitator itself does not have direct physical with body of heater and contacts.The low frequency travelling-magnetic-field that magnetic stirrer produces penetrates furnace shell and furnace lining enters the molten bath.
Magnetic stirrer can interiorly at any time move, and is simple to operate, can manual operations also can move automatically, and the Installation and Debugging time of equipment is very short.
The reliability of magnetic stirrer is very high, approaches 100%.Equipment only needs electric power to keep operation without any moving-member.The running cost of magnetic stirrer is very low, and power consumption only is 0.8～3kWh/t, and the cost of maintenance of the equipment and water coolant only is 25～50% of a power cost.
Provide induction stirring among Fig. 8 and blown the distribution of tubulence energy in the ladle when stirring.Air blowing is stirred in that weld pool surface produces the intensive turbulent flow and very low in bottom, molten bath turbulence intensity.Induction stirring all produces intensive and stirs in whole molten bath, bigger at the weld pool surface stirring intensity, but can not produce violent fluctuation and splash.
Description of drawings
Fig. 1 is the utility model front view
Fig. 2 is Fig. 1 vertical view
Fig. 3 is Figure 1A-A sectional view
Fig. 4 is a magnetic stirrer synoptic diagram at the bottom of the smelting furnace ladle furnace
Fig. 5 is middle liquation motion synoptic diagram for magnetic stirrer is installed in
Fig. 6 is installed in sidepiece liquation motion synoptic diagram for magnetic stirrer
Fig. 7 is the concentric winding sketch of two-phase
Fig. 8 ladle induction stirring and the tubulence energy distribution schematic diagram when stirring of blowing
Embodiment
By Fig. 1 to 7 as can be known, the utility model comprises:
The magnetic stirrer iron core 2 that arc is provided with, uniform on the core teeth directional of iron core 2, yoke is positioned at iron core 2 bottoms, coil 3 alternate being embedded in the core teeth groove, iron core 2 magnetic circuits are set to open circuit, stir molten metal with forming travelling-magnetic-field;
Adopt the concentric winding coil 3 of two-phase, coil 3 windings are used to form directed the moving of travelling-magnetic-field drive molten metal with iron core 2 arc settings;
Described iron core 2 and coil 3 all are arranged in the housing 1.
Principle of work of the present utility model:
The travelling-magnetic-field magnetic stirrer is made of agitator iron core, coil and non-magnetic stainless steel housing.The travelling-magnetic-field magnetic stirrer is the same with linear electric motors, all is the stator differentiation by normal asynchronous.It can be regarded as the stator of an asynchronous motor is radially cut open, with the circumference generate straight line of motor, promptly forms the travelling-magnetic-field magnetic stirrer then.The original like this rotatingfield along the circumference rotation becomes the travelling-magnetic-field of advancing to a direction.Molten metal then substitutes the secondary of electric motor, thereby constitutes travelling-magnetic-field magnetic stirrer (being called for short STS).
The difference of travelling-magnetic-field magnetic stirrer and asynchronous motor is as follows:
1, the iron core of travelling-magnetic-field magnetic stirrer disconnects, and magnetic circuit is opened a way; The iron core of asynchronous motor is closed, and magnetic circuit also is closed.
1) because each phase winding of travelling-magnetic-field magnetic stirrer is asymmetric in the position of iron core, even under the symmetric situation of impressed voltage, tri-phase current is also uneven.For this reason, generally adopt the winding configuration of two-phase, guarantee that the two-phase impedance equates that biphase current is in a basic balance at orthogonal space.Three-phase winding electric magnetic stirrer generally will add auxiliary winding makes current balance type.
2) because the magnetic circuit open circuit except that producing direct wave magnetic field, also is attended by backward-travelling wave magnetic field and impulsive magnetic field.
2, because molten metal is a continuous conductor, induced current wherein portion within it is closed voluntarily, and the induced current of electric motor can only flow and closure in the short-circuited conducting sleeve at two ends along sliver in the rotor.
As shown in Figure 3, magnetic stirrer 11 is set, when feeding the inductor block two-phase alternating current, just produces travelling-magnetic-field at furnace bottom 10
Because the effect in this magnetic field produces induced potential in liquation 9, thereby produces induced current
(following the right-hand rule).This induced current and local magnetic field interaction produce electromagnetic push in liquation
(following left-hand rule).
Shown in Fig. 4,5,, promote liquation and rotate because this thrust follows the effect of ripple field direction.And, because this thrust has horizontal component and vertical component, therefore make liquation upwards make oblique flow, cause the effect of the equalizing temperature of liquation levels.
Embodiment described in the utility model only is the description that preferred implementation of the present utility model is carried out; be not that the utility model design and scope are limited; do not breaking away under the preceding topic of the utility model design philosophy; engineering technical personnel make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
Claims (4)
1, magnetic stirrer at the bottom of the concentric winding ladle furnace of a kind of two-phase is characterized in that comprising:
The magnetic stirrer iron core (2) that arc is provided with, uniform on the core teeth directional of iron core (2), yoke is positioned at iron core (2) bottom, and coil (3) is alternate to be embedded in the core teeth groove, and iron core (2) magnetic circuit is set to open circuit, stirs molten metal with forming travelling-magnetic-field;
Adopt the concentric winding coil of two-phase (3), coil (3) winding is used to form directed the moving of travelling-magnetic-field drive molten metal with iron core (2) arc setting;
Described iron core (2) and coil (3) all are arranged in the housing (1).
2, magnetic stirrer at the bottom of the concentric winding ladle furnace of two-phase according to claim 1, it is characterized in that described coil (3) comprises winding (a, b, c, d, e, f, g), wherein winding (a, b, c, d) series connection is a phase coil, winding (e, f, g) series connection is another phase coil, and two phase coils lead to the two-phase quadrature current.
3, magnetic stirrer at the bottom of the concentric winding ladle furnace of two-phase according to claim 1 is characterized in that described housing (1) top is working face, and working face is corresponding with iron core (2), also is arc, and housing (2) both sides are provided with hanger.
4, according to magnetic stirrer at the bottom of claim 1 or the concentric winding ladle furnace of 2 or 3 described two-phases, it is characterized in that the arc of described iron core (2) and housing (1) working face is formed by three sections, the centre is a horizontal plane, two ends are the scarp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200651099U CN201109787Y (en) | 2007-11-15 | 2007-11-15 | Two-phase concentric winding ladle furnace bottom electromagnetic stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200651099U CN201109787Y (en) | 2007-11-15 | 2007-11-15 | Two-phase concentric winding ladle furnace bottom electromagnetic stirrer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201109787Y true CN201109787Y (en) | 2008-09-03 |
Family
ID=39894316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200651099U Expired - Lifetime CN201109787Y (en) | 2007-11-15 | 2007-11-15 | Two-phase concentric winding ladle furnace bottom electromagnetic stirrer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201109787Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700477B (en) * | 2009-05-12 | 2012-01-11 | 湖南科美达电气股份有限公司 | Multimode magnetic filed electromagnetic stirrer |
| CN103097554A (en) * | 2010-09-14 | 2013-05-08 | Abb研究有限公司 | Apparatus and method for electromagnetic stirring in an electrical arc furnace |
| CN106914183A (en) * | 2017-04-05 | 2017-07-04 | 东北大学 | A kind of rotary EMS device for being arranged on metal bath furnace bottom |
-
2007
- 2007-11-15 CN CNU2007200651099U patent/CN201109787Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700477B (en) * | 2009-05-12 | 2012-01-11 | 湖南科美达电气股份有限公司 | Multimode magnetic filed electromagnetic stirrer |
| CN103097554A (en) * | 2010-09-14 | 2013-05-08 | Abb研究有限公司 | Apparatus and method for electromagnetic stirring in an electrical arc furnace |
| CN103097554B (en) * | 2010-09-14 | 2014-10-22 | Abb研究有限公司 | Apparatus and method for electromagnetic stirring in an electrical arc furnace |
| US8876934B2 (en) | 2010-09-14 | 2014-11-04 | Abb Research Ltd. | Apparatus and method for electromagnetic stirring in an electrical arc furnace |
| CN106914183A (en) * | 2017-04-05 | 2017-07-04 | 东北大学 | A kind of rotary EMS device for being arranged on metal bath furnace bottom |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101700477B (en) | Multimode magnetic filed electromagnetic stirrer | |
| CN103182495B (en) | Multifunctional electromagnetic stirrer | |
| CN203639530U (en) | Composite electroslag casting device for optimizing metal solidification structure by using steady-state magnetic field | |
| CN103097554A (en) | Apparatus and method for electromagnetic stirring in an electrical arc furnace | |
| CN201109787Y (en) | Two-phase concentric winding ladle furnace bottom electromagnetic stirrer | |
| CN106914183A (en) | A kind of rotary EMS device for being arranged on metal bath furnace bottom | |
| CN101509730B (en) | Bottom assembling electromagnetic agitator for direct current excitation smelting furnace | |
| EP0248242B1 (en) | Continuous metal casting apparatus | |
| CN201151734Y (en) | Concentrated short-distance winding furnace bottom electromagnetic stirrer | |
| RU2543022C1 (en) | Holding furnace | |
| PL130800B1 (en) | Apparatus for agitation of molten metal in an open-top mould | |
| JP2001512182A (en) | Apparatus and method for stirring molten metal using an electromagnetic field | |
| US6026113A (en) | Method for the electromagnetic stirring of the liquid metal in electric arc furnaces and relative device | |
| CN201413049Y (en) | Crucible travelling wave magnetic field electromagnetic stirrer | |
| CN201151735Y (en) | Electromagnetic stirrer at bottom of Cramer winding furnace | |
| CN201744635U (en) | Hydraulically-driven permanent magnetic blender for continuous casting machine | |
| EP3849726B1 (en) | Electromagnetic stirring device in a mould for casting aluminium or aluminium alloys, stirring method in a mould for casting aluminium or aluminium alloys, mould and casting machine for casting aluminium or aluminium alloys | |
| CN201558682U (en) | Multi-mode magnetic field electromagnetic stirrer | |
| CN201558681U (en) | Bipolar permanent magnetic stirrer | |
| EP3984666A1 (en) | Electromagnetic stirring device and method for secondary cooling zone during slab continuous casting | |
| CN202427909U (en) | Built-in type traveling wave magnetic field electromagnetic mixing sensor | |
| CN214349479U (en) | Liquid core electromagnetic stirring device and round billet electromagnetic stirring system | |
| CN203610632U (en) | Crescent face radial high-shearing electromagnetic stirring round blank continuous casting device | |
| CN106783000A (en) | A kind of permanent magnet of hydraulic drive permanent magnetic stirrer | |
| CN205254062U (en) | Square billet components of a whole that can function independently multi -mode electromagnetic agitator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: YUEYANG CLPEC ELECTROMECHANICAL ENGINEERING & TECHNOLOGY CO., LTD. Assignor: Hunan Kemeida Electric Co., Ltd. Contract fulfillment period: 2009.11.8 to 2015.11.8 Contract record no.: 2009430000258 Denomination of utility model: Two-phase concentric winding ladle furnace bottom magnetic stirrer Granted publication date: 20080903 License type: Exclusive license Record date: 20091217 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.8 TO 2015.11.8; CHANGE OF CONTRACT Name of requester: YUEYANG CLPEC ELECTROMECHANICAL ENGINEERING + TECH Effective date: 20091217 |
|
| ASS | Succession or assignment of patent right |
Owner name: HU NAN KEMEIDA ELECTRIC CO., LTD. Free format text: FORMER OWNER: HUNAN KEMEIDA ELECTRIC CO., LTD. Effective date: 20110121 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 414000 MAILBOX NO. 90, LUOWANG ECONOMIC DEVELOPMENT ZONE, YUEYANG CITY, HU NAN PROVINCE TO: 414000 KEMEIDA ROAD, YUEYANG CITY, HU NAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110121 Address after: 414000 Hunan province Yueyang Kemeida Road Patentee after: Hunan Kemeida Electric Co., Ltd. Address before: 414000 box 90, Luo Wang Economic Development Zone, Hunan, Yueyang Patentee before: Hunan Kemeida Electric Co., Ltd. |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: YUEYANG CLPEC ELECTROMECHANICAL ENGINEERING & TECHNOLOGY CO., LTD. Assignor: Hunan Kemeida Electric Co., Ltd. Contract record no.: 2009430000258 Date of cancellation: 20110309 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080903 |