CN105916229A - Circular electric furnace and electrode arrangement structure thereof - Google Patents
Circular electric furnace and electrode arrangement structure thereof Download PDFInfo
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- CN105916229A CN105916229A CN201610371588.0A CN201610371588A CN105916229A CN 105916229 A CN105916229 A CN 105916229A CN 201610371588 A CN201610371588 A CN 201610371588A CN 105916229 A CN105916229 A CN 105916229A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
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Abstract
The invention provides a circular electric furnace and an electrode arrangement structure thereof. The electrode arrangement structure of the circular electric furnace comprises 2n electrodes and n single-phase transformers, one single-phase transformer includes two output ends, and the 2n electrodes are respectively connected with the output ends of the n single-phase transformers, wherein n is an integer n which is greater than or equal to 2. The electrode arrangement structure of the circular electric furnace provided by the invention comprises 2n electrodes and n single-phase transformers, and n is greater than or equal to 2. Namely, the structure comprises at least four electrodes and two single-phase transformers, and one single-phase transformer is connected with two electrodes. Thus, the number of the electrodes and the number of the transformers in the circular electric furnace are increased effectively, the limitation that only three electrodes and one transformer can be arranged inside a traditional circular electric furnace is broken, and the electric power of the circular electric furnace is expanded greatly.
Description
Technical field
The present invention relates to smelting equipment technical field, the electrode in particular to a kind of circular electric furnace is arranged
Structure and include the circular electric furnace of this electrode arrangement.
Background technology
At present, typical round metallurgy alternating current electric furnace or electric furnace arrangement for producing steel are all to arrange three electrodes, three electricity
The line at center, pole forms an equilateral triangle.This electrode arrangement has the disadvantages that 1) it is subject to
The restriction of electrode diameter size, current strength has become bottlenecks, the transformer of the metallurgical electric furnace of three electrodes
Size is just restricted, it is impossible to expand；2) in the circular metallurgical electric furnace of three electrodes, due to induced electricity
The generation of magnetic force, electric arc repels each other, and its position deflection is by center of electric furnace and electrode centers line direction, therefore shape
Become a blossom type molten bath, be unfavorable for the control of charging.
Summary of the invention
In order to solve at least one above-mentioned technical problem, it is an object of the present invention to provide a kind of circular electric
The electrode arrangement of stove.
A kind of circular electric furnace including above-mentioned electrode arrangement of offer is provided.
To achieve these goals, the embodiment of first aspect present invention provides the electrode of a kind of circular electric furnace
Arrangement, including: 2n electrode；With n single-phase transformer, described in one, single-phase transformer includes two
Individual output, the output of 2n described electrode described single-phase transformer individual with n respectively is connected；Wherein, n
For integer, and n >=2.
The electrode arrangement of the circular electric furnace that the embodiment of first aspect present invention provides, including 2n electricity
Pole and n single-phase transformer, and n >=2, i.e. include at least 4 electrodes and 2 single-phase transformers, one
Individual single-phase transformer connects two electrodes, thus the quantity of electrode and transformation in effectively increasing circular electric furnace
The quantity of device, can only arrange 3 electrodes and the restriction of a transformer, enter in having broken typical round electric furnace
And effectively expand the electrical power of circular electric furnace.
It addition, the electrode arrangement of the circular electric furnace in above-described embodiment of present invention offer can also have
Following additional technical feature:
In technique scheme, n is 3.
N is 3, i.e. the electrode arrangement of this circle electric furnace includes 6 electrodes and 3 single-phase transformers,
Owing to a single-phase transformer connects two electrodes, therefore two electrodes being connected with same single-phase transformer are same
Phase electrode, the electric current passed through is in-phase current, then 6 electrodes and 3 single-phase transformers form 3 phases 6
The electrode arrangement of electrode, can be powered by three-phase alternating current, owing to current strength and time are sinusoidal
Relation, so three-phase alternating current can average current intensity effectively, the molten bath making formation is more uniform.When
So, it will be understood by those of skill in the art that the size according to circular electric furnace interior space, it is also possible to arrange
The electrode of the forms such as 2 single-phase transformers and 4 electrodes, 4 single-phase transformers and 8 electrodes arranges knot
Structure, as long as having enough spaces in furnace chamber, it is possible to accommodates these electrodes, all can play expansion circle
The purpose of shape electric furnace electrical power, and all without departing from the design philosophy of the present invention and objective, the most all in the present invention
Protection domain in.
In any of the above-described technical scheme, six described electrodes be arranged in parallel along the circumference of described electric furnace.
In any of the above-described technical scheme, six described electrodes are centrally located on same circle, described circle
Become the pole heart circle of six described electrodes.
In any of the above-described technical scheme, the center of circle of described pole heart circle is heavy with the center of the furnace chamber of described electric furnace
Close.
Six electrodes be arranged in parallel along the circumferencial direction of electric furnace, then the molten bath that six electrodes are formed is also along electric furnace
Circumferentially distributed, so the molten bath in furnace chamber is relatively uniform, then the load that furnace wall is subject to is the most relatively uniform, thus
Avoid furnace wall situation generation that is serious and that be badly damaged because high-temperature melt flow washes away of certain position, effectively
Extend the service life of furnace wall, and then improve security and the durability of circular electric furnace；Further,
Six electrodes are centrally located on same circle, form pole heart circle, so make in furnace chamber the shape in molten bath more
Adjunction subcircular, thus molten bath is more uniform, the load that furnace wall is subject to is the most uniform；Preferably, the pole heart
The center of circle of circle and the center superposition of the furnace chamber of electric furnace, so, molten bath can be formed in the centre of furnace chamber,
Thus it is further ensured that the uniformity of circular electric furnace furnace wall load, further increase the security of circular electric furnace
And durability.
It is to be understood that in open arc smelting system, electric arc trend has with the safety of molten bath flowing and furnace wall
Relation greatly.In typical round electric furnace, electric arc repels one another, if in order to lower consumption of electrode or
Significant power operates, it is necessary to improve voltage；If but voltage is high, electric arc can be the longest, sometimes the meeting of electric arc tail
Corresponding furnace wall is burnt out.The most domestic metallurgical furnace is the most all avoided using high voltage operation.But, as
Really low voltage operating, the highest electric current can cause strong electric arc momentum, impacts weld pool surface towards furnace wall direction,
The slag making excessive temperature flows to furnace wall；If blanking is uneven, furnace wall is easily washed damage.Therefore electricity
The layout of pole is extremely important, not only affects the formation in molten bath, also affects the trend of electric arc, to molten bath melt flow
Affect the biggest.
In any of the above-described technical scheme, two the described electrodes being connected with same described single-phase transformer are same
Phase electrode, two described electrodes of homophase are disposed adjacent.
Two electrodes making homophase are disposed adjacent, and the electrode arrangement on the one hand making 3 phase 6 electrodes is suitable
It is close in three independent single-phase electricfurnaces, and centre is not provided with furnace wall interval, share molten bath, the most effective
Add the electrical power of single electric furnace；On the other hand also avoid and arranged in a crossed manner cause between out-phase electrode mutually
The situation that impact causes power factor (PF) to be greatly lowered occurs.If it is to be understood that the two of homophase electrodes
Arranged in a crossed manner, then to interact between each phase, electric arc trend does not has certain rule, it is possible to create great Liang Xie
Ripple, causes power factor (PF) to be greatly lowered.
In any of the above-described technical scheme, the center of adjacent two described electrodes of out-phase and described pole heart circle
Angle between the line in the center of circle is β.
In any of the above-described technical scheme, the center of adjacent two described electrodes of homophase and described pole heart circle
Angle between the line in the center of circle is α, alpha+beta=120 °.
Owing to enclosing in conglobate six electrodes, two electrodes of homophase are disposed adjacent, therefore six electrode shapes
Become three to adjacent in-phase electrodes and three to adjacent out-phase electrode, then the center of every pair of adjacent electrode with
It is respectively formed an angle between the line of the round heart of the pole heart, three centers to adjacent out-phase electrode are set here
And the angle of three angles formed between pole heart circle circle center line connecting is β, between out-phase electrode
Electric arc is attracting, and the electric arc between in-phase electrodes repels each other, therefore three angle phases between three pairs of out-phase electrodes
Deng, it is possible to the electric arc making six electrodes produce moves towards relatively and equably along electric furnace circumference such that it is able to shape
Become a uniform circular molten bath.
Further, three between center and the pole heart circle circle center line connecting of adjacent in-phase electrodes three of formation
The angle of angle is α, due to 3 α+3 β=360 °, therefore alpha+beta=120 °, two electricity of the most adjacent homophase
The center of angle [alpha] and adjacent two electrodes of out-phase between the line in the center of circle of the center of pole and pole heart circle
And the angle beta sum between the line in the center of circle of pole heart circle is 120 °, then 3 phase 6 electrodes are at circular electric furnace
In be arranged symmetrically with, so make interfering average between three pairs of in-phase electrodes, and then produce
Electric arc and molten bath are the most symmetrical, more uniformly, make melt flow be just as relative to the furnace wall of circumference, from
And improve the life-span of furnace wall, and then improve security and the durability of circular electric furnace.
Distance B in any of the above-described technical scheme, between the center of adjacent two described electrodes of out-phase
It is not less than 1 with the ratio B/A of distance A between the center of adjacent two described electrodes of homophase.
Distance B in any of the above-described technical scheme, between the center of adjacent two described electrodes of out-phase
With the ratio B/A of distance A between the center of adjacent two described electrodes of homophase more than or equal to 1.1 and
Less than or equal to 1.3.
Arrange between distance B between the center of adjacent out-phase electrode and the center of adjacent in-phase electrodes
The ratio B/A of distance A not less than 1, distance B between the center of the most adjacent out-phase electrode is more than
Distance A between the center of adjacent in-phase electrodes, to avoid the electric arc between out-phase electrode the most attracting,
Cause district of localized hyperthermia, so electric arc is averagely received between two-phase, can be formed uniformly in making circular electric furnace
Circular molten bath, in order to the control of charging；Meanwhile, electric arc receives between two-phase, additionally it is possible to avoid electric arc
Tail is swept and is occurred to the situation of furnace wall, so that circular electric furnace can be with high voltage operation, to reduce export license,
High-temperature melt flow can also be avoided to flow to furnace wall simultaneously.Preferably, B/A is more than or equal to 1.1 and is less than or equal to 1.3,
So can improve the uniformity of arc-distribution further, and then improve the uniform journey in circular molten bath further
Degree.
In any of the above-described technical scheme, between described pole heart diameter of a circle d and the internal diameter D of described furnace chamber
Ratio d/D be not more than 0.5.
In any of the above-described technical scheme, between described pole heart diameter of a circle d and the internal diameter D of described furnace chamber
Ratio d/D more than or equal to 0.25 and less than or equal to 0.33.
The ratio d/D arranged between the heart diameter of a circle d and the internal diameter D of furnace chamber of pole is not more than 0.5, i.e. the pole heart
The diameter of a circle d half less than furnace chamber internal diameter D, so on the one hand relatively increases between electrode and furnace wall
Distance, thus avoid electric arc tail and sweep the situation causing furnace wall to burn out to furnace wall and occur, on the other hand can
Molten bath is efficiently controlled in the middle part of furnace chamber, thus avoids high-temperature melt flow and flow to furnace wall and cause furnace wall
Washing away impaired situation to occur, this is effectively improved the service life of furnace wall, and then improves circular electric furnace
Security and durability.Preferably, d/D, more than or equal to 0.25 and less than or equal to 0.33, so can enter
One step extends the service life of furnace wall, thus improves security and the durability of circular electric furnace further.
The embodiment of second aspect present invention provides a kind of circular electric furnace, including as in first aspect embodiment
The electrode arrangement of the circular electric furnace described in any one.
The circular electric furnace that the embodiment of second aspect present invention provides, appoints because being provided with in first aspect embodiment
The electrode arrangement of one described circular electric furnace, thus effectively expand the electrical power of circular electric furnace,
And uniform circular molten bath can be formed, it is beneficial to the control of charging, the most also extends the use longevity of furnace wall
Life, improves security and the durability of circular electric furnace.
Additional aspect and the advantage of the present invention will become obvious in following description part, or pass through the present invention
Practice recognize.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment
Will be apparent from easy to understand, wherein:
Fig. 1 is the schematic diagram of the electrode arrangement of circular electric furnace of the present invention.
Wherein, the corresponding relation between the reference in Fig. 1 and component names is:
No. 11 electrodes, 12 No. two electrodes, 13 No. three electrodes, 14 No. four electrodes, 15 No. five electrodes,
16 No. six electrodes, 20 pole heart circles, 30 furnace walls, 40 single-phase transformers.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the accompanying drawings and
The present invention is further described in detail by detailed description of the invention.It should be noted that in the feelings do not conflicted
Under condition, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but, this
Bright can implement to use other to be different from other modes described here, therefore, the protection model of the present invention
Enclose and do not limited by following public specific embodiment.
Describe circular electric furnace described according to some embodiments of the invention referring to Fig. 1 and electrode is arranged
Structure.
As it is shown in figure 1, the electrode arrangement of the circular electric furnace of the embodiment offer of first aspect present invention,
Including: 2n electrode and n single-phase transformer 40.
Specifically, a single-phase transformer 40 includes two outputs, 2n electrode single-phase change individual with n respectively
The output of depressor 40 is connected；Wherein, n is integer, and n >=2.
The electrode arrangement of the circular electric furnace that the embodiment of first aspect present invention provides, including 2n electricity
Pole and n single-phase transformer 40, and n >=2, i.e. include at least 4 electrodes and 2 single-phase transformers 40,
One single-phase transformer 40 connects two electrodes, thus the quantity of electrode in effectively increasing circular electric furnace
With the quantity of transformer, 3 electrodes and the limit of a transformer can only be set in having broken typical round electric furnace
System, and then effectively expand the electrical power of circular electric furnace.
In some embodiments of the invention, as it is shown in figure 1, n is 3.
In the above-described embodiments, n is 3, i.e. the electrode arrangement of this circle electric furnace include 6 electrodes and
3 single-phase transformers 40, owing to a single-phase transformer 40 connects two electrodes, therefore with same single-phase change
Two electrodes that depressor 40 is connected are in-phase electrodes, and the electric current passed through is in-phase current, then 6 electrodes and
3 single-phase transformers 40 form the electrode arrangement of 3 phase 6 electrodes, can be supplied by three-phase alternating current
Electricity, owing to current strength and time are sine relations, so three-phase alternating current can effectively average current strong
Degree, the molten bath making formation is more uniform.
Certainly, it will be understood by those of skill in the art that the size according to circular electric furnace interior space, it is possible to
To arrange the form such as 2 single-phase transformers 40 and 4 electrodes, 4 single-phase transformers 40 and 8 electrodes
Electrode arrangement, as long as having enough spaces in furnace chamber, it is possible to accommodate these electrodes, equal energy
Enough play the purpose of enlarged rounded electric furnace electrical power, and all without departing from the design philosophy of the present invention and objective, because of
This is the most within the scope of the present invention.
Preferably, as it is shown in figure 1, six electrodes be arranged in parallel along the circumference of electric furnace.
It is highly preferred that six electrodes are centrally located on same circle, the pole heart circle of round-formed six electrodes
20。
It is highly preferred that as it is shown in figure 1, the center superposition of the furnace chamber of the center of circle of pole heart circle 20 and electric furnace.
Six electrodes be arranged in parallel along the circumferencial direction of electric furnace, then the molten bath that six electrodes are formed is also along electric furnace
Circumferencial direction is distributed, so the molten bath in furnace chamber is relatively uniform, then the load that furnace wall 30 is subject to is the most equal
Even, thus avoid the furnace wall 30 of certain position because high-temperature melt flow washes away situation that is serious and that be badly damaged
Occur, effectively extend the service life of furnace wall 30, and then improve the security of circular electric furnace and resistance to
Property for a long time；Further, six electrodes are centrally located on same circle, form pole heart circle 20, so make
In furnace chamber the shape in molten bath be more nearly circle, thus molten bath is more uniform, the load that furnace wall 30 is subject to
The most uniform；Preferably, the center of circle of pole heart circle 20 and the center superposition of the furnace chamber of electric furnace, so, molten
Pond can be formed in the centre of furnace chamber, thus is further ensured that the uniform of circular electric furnace furnace wall 30 load
Property, further increase security and the durability of circular electric furnace.
It is to be understood that in open arc smelting system, electric arc trend and molten bath flowing and the peace of furnace wall 30
Entirely there is great relation.In typical round electric furnace, electric arc repels one another, if in order to lower consumption of electrode
Or significant power operation, it is necessary to improve voltage；If but voltage is high, electric arc can be the longest, sometimes electric arc
Tail can burn out corresponding furnace wall 30.The most domestic metallurgical furnace is the most all avoided using high voltage operation.
But, if low voltage operating, the highest electric current can cause strong electric arc momentum, rushes towards furnace wall 30 direction
Hit weld pool surface so that the slag of excessive temperature flows to furnace wall 30；If blanking is uneven, furnace wall 30 is easily
It is washed damage.Therefore the layout of electrode is extremely important, not only affects the formation in molten bath, also affects electric arc
Trend, the impact on molten bath melt flow is the biggest.
In some embodiments of the invention, as it is shown in figure 1, be connected with same single-phase transformer 40 two
Individual electrode is in-phase electrodes, and two electrodes of homophase are disposed adjacent.
In the above-described embodiments, make two electrodes of homophase be disposed adjacent, on the one hand make 3 phase 6 electrodes
Electrode arrangement is equivalent to three independent single-phase electricfurnaces and is close to, and centre is not provided with furnace wall 30 and is spaced,
Share molten bath, so effectively increase the electrical power of single electric furnace；On the other hand also avoid arranged in a crossed manner leading
The situation that causing influences each other between out-phase electrode causes power factor (PF) to be greatly lowered occurs.It is to be understood that
If the two of homophase electrode crossing are arranged, then interact between each phase, electric arc trend does not has a set pattern
Rule, it is possible to create a large amount of harmonic waves, causes power factor (PF) to be greatly lowered.
In the above-described embodiments, further, as it is shown in figure 1, the center of adjacent two electrodes of out-phase with
Angle between the line in the center of circle of pole heart circle 20 is β.
Further, as it is shown in figure 1, the circle of 20 is justified with the pole heart in the center of adjacent two electrodes of homophase
Angle between the line of the heart is α, alpha+beta=120 °.
Owing to enclosing in conglobate six electrodes, two electrodes of homophase are disposed adjacent, therefore six electrode shapes
Become three to adjacent in-phase electrodes and three to adjacent out-phase electrode, then the center of every pair of adjacent electrode with
It is respectively formed an angle between the line in heart circle 20 centers of circle, pole, arranges three here to adjacent out-phase electrode
The angle of three angles formed between center and pole heart circle 20 circle center line connectings is β, is due to out-phase electricity
Electric arc between pole is attracting, and the electric arc between in-phase electrodes repels each other, therefore three between three pairs of out-phase electrodes
Individual angle is equal, it is possible to the electric arc making six electrodes produce is relative, and moves towards along electric furnace circumference equably, from
And a uniform circular molten bath can be formed.
Further, three to formation between center and pole heart circle 20 circle center line connectings of adjacent in-phase electrodes
The angle of three angles is α, due to 3 α+3 β=360 °, therefore alpha+beta=120 °, the most adjacent homophase two
Angle [alpha] between the center of electrode and the line in the center of circle of pole heart circle 20 and adjacent two electrodes of out-phase
Angle beta sum between the line in the center of circle of center and pole heart circle 20 is 120 °, then 3 phase 6 electrodes are being justified
Shape electric furnace is arranged symmetrically with, so makes interfering the most averagely between three pairs of in-phase electrodes, and then
Produce electric arc and molten bath the most symmetrical, more uniformly, make melt flow relative to circumference furnace wall 30 be all
The same, thus improve the life-span of furnace wall 30, and then improve security and the durability of circular electric furnace.
In the above-described embodiments, further, distance B between the center of adjacent two electrodes of out-phase
It is not less than 1 with the ratio B/A of distance A between the center of adjacent two electrodes of homophase.
Preferably, distance B between the center of adjacent two electrodes of out-phase and adjacent two electricity of homophase
The ratio B/A of distance A between the center of pole is more than or equal to 1.1 and less than or equal to 1.3.
Arrange between distance B between the center of adjacent out-phase electrode and the center of adjacent in-phase electrodes
The ratio B/A of distance A not less than 1, distance B between the center of the most adjacent out-phase electrode is more than
Distance A between the center of adjacent in-phase electrodes, to avoid the electric arc between out-phase electrode the most attracting,
Cause district of localized hyperthermia, so electric arc is averagely received between two-phase, can be formed uniformly in making circular electric furnace
Circular molten bath, in order to the control of charging；Meanwhile, electric arc receives between two-phase, additionally it is possible to avoid electric arc
Tail is swept and is occurred to the situation of furnace wall 30, so that circular electric furnace can be with high voltage operation, to reduce electrode
Loss, can also avoid high-temperature melt flow to flow to furnace wall 30 simultaneously.Preferably, B/A is more than or equal to 1.1 and little
In equal to 1.3, so can improve the uniformity of arc-distribution further, and then it is molten to improve circle further
The uniformity coefficient in pond.
In the above-described embodiments, further, between the diameter d and the internal diameter D of furnace chamber of pole heart circle 20
Ratio d/D be not more than 0.5.
Preferably, the ratio d/D between the diameter d and the internal diameter D of furnace chamber of pole heart circle 20 is more than or equal to 0.25
And less than or equal to 0.33.
The ratio d/D arranged between the diameter d and the internal diameter D of furnace chamber of pole heart circle 20 is not more than 0.5, i.e.
The diameter d of pole heart circle 20 half less than furnace chamber internal diameter D, so on the one hand relatively increases electrode and stove
Distance between wall 30, thus avoid electric arc tail and sweep the situation causing furnace wall 30 to burn out to furnace wall 30 and send out
Raw, on the other hand molten bath can be efficiently controlled in the middle part of furnace chamber, thus avoid high-temperature melt flow
Flowing to furnace wall 30 causes furnace wall 30 to wash away impaired situation generation, and this is effectively improved making of furnace wall 30
With the life-span, and then improve security and the durability of circular electric furnace.Preferably, d/D is more than or equal to 0.25
And less than or equal to 0.33, so can extend the service life of furnace wall 30 further, thus improve further
The security of circular electric furnace and durability.
Circular electric furnace that the present invention provides is described in detail below in conjunction with some specific embodiments of the present invention
Electrode arrangement.
Embodiment one
As it is shown in figure 1, the electrode arrangement of circular electric furnace includes three single-phase transformers 40 and six electricity
Pole；Six electrodes be arranged in parallel along the circumferencial direction of electric furnace；And six electrodes are centrally located on same circle,
I.e. it is positioned on pole heart circle 20；The center of circle of pole heart circle 20 and the center superposition of electric furnace furnace chamber；Two electricity of homophase
Pole is disposed adjacent, and 11, No. two electrodes 12 of an electrode form the first phase, 13, No. four electrodes of No. three electrodes
14 form the second phase, and 15, No. six electrodes 16 of No. five electrodes form third phase；And adjacent in-phase electrodes
Angle between center with the line in pole heart circle 20 centers of circle is equal, is designated as α, in adjacent out-phase electrode
Angle between the heart with the line in pole heart circle 20 centers of circle is equal, is designated as β, alpha+beta=120 °；Adjacent homophase
Distance between the center of electrode is designated as A, and the distance between the center of adjacent out-phase electrode is designated as B.
Wherein, the power of each single-phase transformer 40 is 25MVA；The diameter d of pole heart circle 20 is 3.9
Rice, furnace chamber internal diameter D is 13.6 meters, therefore d/D ≈ 0.29；A is 1.77 meters, and B is 2.13 meters, therefore B/A ≈ 1.2；
α is 54 °, and β is 66 °.
Embodiment two
Difference with embodiment one is, the power of each single-phase transformer 40 is 12MVA；Pole heart circle
The diameter d of 20 is 2.6 meters, and furnace chamber internal diameter D is 9.1 meters, therefore d/D ≈ 0.29；A is 1.24 meters, B
It is 1.36 meters, therefore B/A ≈ 1.1；α is 57 °, and β is 63 °.
Embodiment three
Difference with embodiment one is, the power of each single-phase transformer 40 is 18MVA；Pole heart circle
The diameter d of 20 is 3.52 meters, and furnace chamber internal diameter D is 12.3 meters, therefore d/D ≈ 0.29；A is 1.53 meters, B
It is 1.98 meters, therefore B/A ≈ 1.3；α is 51 °, and β is 69 °.
Embodiment four
Difference with embodiment one is, the power of each single-phase transformer 40 is 30MVA；Pole heart circle
The diameter d of 20 is 3.9 meters, and furnace chamber internal diameter D is 15.58 meters, therefore d/D ≈ 0.25；A is 1.77 meters, B
It is 2.13 meters, therefore B/A ≈ 1.2；α is 54 °, and β is 66 °.
Embodiment five
Difference with embodiment one is, the power of each single-phase transformer 40 is 45MVA；Pole heart circle
The diameter d of 20 is 3.52 meters, and furnace chamber internal diameter D is 10.68 meters, therefore d/D ≈ 0.33；A is 1.53 meters,
B is 1.98 meters, therefore B/A ≈ 1.3；α is 51 °, and β is 69 °.
Embodiment six
Difference with embodiment one is, the power of each single-phase transformer 40 is 5MVA；Pole heart circle 20
Diameter d be 3 meters, furnace chamber internal diameter D is 6 meters, therefore d/D ≈ 0.5；A is 1.43 meters, and B is 1.57
Rice, therefore B/A ≈ 1.1；α is 57 °, and β is 63 °.
Embodiment seven
Difference with embodiment one is, the power of each single-phase transformer 40 is 5MVA；Pole heart circle 20
Diameter d be 3 meters, furnace chamber internal diameter D is 6 meters, therefore d/D ≈ 0.5；A is 1.5 meters, and B is 1.5 meters,
Therefore B/A ≈ 1；α is 60 °, and β is 60 °.
Above-mentioned specific embodiment is respectively provided with following beneficial effect: formed in the centre of circular alternating current electric furnace
Uniform circular molten bath；Owing to having 6 electrodes, therefore, it is possible to use 3 single-phase transformers 40,
Thus effectively expand the electrical power of electric furnace.
The circular electric furnace that the embodiment of second aspect present invention provides, including as arbitrary in first aspect embodiment
The electrode arrangement of the circular electric furnace of item.
The circular electric furnace that the embodiment of second aspect present invention provides, appoints because being provided with in first aspect embodiment
The electrode arrangement of the circular electric furnace of, thus effectively expand the electrical power of circular electric furnace, and energy
The uniform circular molten bath of enough formation, is beneficial to the control of charging, the most also extends the use longevity of furnace wall 30
Life, improves security and the durability of circular electric furnace.
In sum, the arrangement of the circular electric furnace that the present invention provides, single including 2n electrode and n
Phase transformer, and n >=2, i.e. include at least 4 electrodes and 2 single-phase transformers, a single-phase transformation
Device connects two electrodes, thus the quantity of electrode and the quantity of transformer in effectively increasing circular electric furnace,
3 electrodes and the restriction of a transformer can only be set in having broken typical round electric furnace, and then effectively expand
The big electrical power of circular electric furnace.
In the present invention, term " first ", " second " are only used for the purpose described, and it is not intended that refer to
Show or imply relative importance；Term " multiple " then refers to two or more, unless otherwise clear and definite limit
Fixed.Term " is installed ", " being connected ", " connection ", the term such as " fixing " all should be interpreted broadly, such as,
" connecting " can be fixing connection, it is also possible to is to removably connect, or is integrally connected；" being connected " can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary.For those of ordinary skill in the art
Speech, can understand above-mentioned term concrete meaning in the present invention as the case may be.
In the description of this specification, term " embodiment ", " some embodiments ", " specific embodiment "
Deng description means to combine this embodiment or example describes specific features, structure, material or feature be contained in
In at least one embodiment of the present invention or example.In this manual, the schematic representation to above-mentioned term
It is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can combine in any one or more embodiments or example in an appropriate manner.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for ability
For the technical staff in territory, the present invention can have various modifications and variations.All in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvement etc. made, should be included in protection scope of the present invention it
In.
Claims (13)
1. the electrode arrangement of a circular electric furnace, it is characterised in that including:
2n electrode；With
N single-phase transformer, single-phase transformer described in includes two outputs, and 2n described electrode is respectively
It is connected with the output of n described single-phase transformer；
Wherein, n is integer, and n >=2.
The electrode arrangement of circular electric furnace the most according to claim 1, it is characterised in that
N is 3.
The electrode arrangement of circular electric furnace the most according to claim 2, it is characterised in that
Six described electrodes be arranged in parallel along the circumference of described electric furnace.
The electrode arrangement of circular electric furnace the most according to claim 3, it is characterised in that
Six described electrodes are centrally located on same circle, the pole heart of described round-formed six described electrodes
Circle.
The electrode arrangement of circular electric furnace the most according to claim 4, it is characterised in that
The center of circle of described pole heart circle and the center superposition of the furnace chamber of described electric furnace.
6. according to the electrode arrangement of the circular electric furnace described in claim 4 or 5, it is characterised in that
Two the described electrodes being connected with same described single-phase transformer are in-phase electrodes, described in two of homophase
Electrode is disposed adjacent.
The electrode arrangement of circular electric furnace the most according to claim 6, it is characterised in that
Angle between the line in the center of circle of the center of adjacent two described electrodes of out-phase and described pole heart circle
It is β.
The electrode arrangement of circular electric furnace the most according to claim 7, it is characterised in that
Angle between the line in the center of circle of the center of adjacent two described electrodes of homophase and described pole heart circle
It is α, alpha+beta=120 °.
The electrode arrangement of circular electric furnace the most according to claim 8, it is characterised in that
Distance B between the center of adjacent two described electrodes of out-phase and adjacent two described electricity of homophase
The ratio B/A of distance A between the center of pole is not less than 1.
The electrode arrangement of circular electric furnace the most according to claim 9, it is characterised in that
Distance B between the center of adjacent two described electrodes of out-phase and adjacent two described electricity of homophase
The ratio B/A of distance A between the center of pole is more than or equal to 1.1 and less than or equal to 1.3.
11. according to the electrode arrangement of the circular electric furnace described in claim 4 or 5, it is characterised in that
Ratio d/D between described pole heart diameter of a circle d and the internal diameter D of described furnace chamber is not more than 0.5.
The electrode arrangement of the 12. circular electric furnaces stated according to claim 11, it is characterised in that
Ratio d/D between described pole heart diameter of a circle d and the internal diameter D of described furnace chamber is more than or equal to 0.25
And less than or equal to 0.33.
13. 1 kinds of circular electric furnaces, it is characterised in that include as according to any one of claim 1 to 12
The electrode arrangement of circular electric furnace.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610371588.0A CN105916229B (en) | 2016-05-30 | 2016-05-30 | Round electric furnace and its electrode arrangement structure |
| PCT/CN2017/084281 WO2017206700A1 (en) | 2016-05-30 | 2017-05-15 | Circular electric furnace, and electrode arrangement structure thereof |
| KR1020187036891A KR20190009791A (en) | 2016-05-30 | 2017-05-15 | Circular electric furnace and its electrode arrangement structure |
| CA3025378A CA3025378A1 (en) | 2016-05-30 | 2017-05-15 | Circular electric furnace, and electrode arrangement structure thereof |
| AU2017275056A AU2017275056A1 (en) | 2016-05-30 | 2017-05-15 | Circular electric furnace, and electrode arrangement structure thereof |
| US16/304,650 US20190170443A1 (en) | 2016-05-30 | 2017-05-15 | Circular Electric Furnace, and Electrode Arrangement Structure Thereof |
| EP17805645.3A EP3468302A4 (en) | 2016-05-30 | 2017-05-15 | Circular electric furnace, and electrode arrangement structure thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206700A1 (en) * | 2016-05-30 | 2017-12-07 | 北京中凯宏德科技有限公司 | Circular electric furnace, and electrode arrangement structure thereof |
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| CN202013104U (en) * | 2011-04-22 | 2011-10-19 | 广西新振锰业集团有限公司 | Double-triangle long circular DC (direct current) submerged arc furnace with six electrodes |
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