CN205986657U - Hot stove low frequency economizer system in ore deposit - Google Patents
Hot stove low frequency economizer system in ore deposit Download PDFInfo
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- CN205986657U CN205986657U CN201621010103.7U CN201621010103U CN205986657U CN 205986657 U CN205986657 U CN 205986657U CN 201621010103 U CN201621010103 U CN 201621010103U CN 205986657 U CN205986657 U CN 205986657U
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Abstract
The utility model belongs to the technical field of metallurgical power electronic, concretely relates to is to a hot stove low frequency economizer system in ore deposit, include: the hot stove in ore deposit, the hot stove in ore deposit adopts the power supply of low frequency power multi -electrode, its with the hot stove in ore deposit is connected, to the hot stove in ore deposit provides electrical power supply, the transformer, its with the low frequency power is connected, the controller, its with the low frequency power is connected, control low frequency power output's electrical power supply's frequency. The utility model discloses the realization reaches and reduces short network interchange pressure drop for the low frequency power supply of the hot stove in ore deposit, reduces reactive power, carries high power factor, in the extended electrode life -span, increases good results such as output.
Description
Technical field
This utility model belongs to metallurgical electric and electronic technical field and in particular to arriving a kind of mineral hot furnace low frequency energy-saving system.
Background technology
Mineral hot furnace be produce ferrosilicon, ferronickel, ferrum, ferromanganese, carbide, manganese, silicomanganese, the field such as industrial silicon must be with setting
Standby, belong to using and have a large capacity and a wide range, the industrial class of huge energy consumption.China be world's ferrosilicon, ferronickel, ferrum, carbide, manganese, silicomanganese,
Industrial silicon production big country, according to incompletely statistics, the whole nation has nearly 30,000 5 thousand multiple stage of mineral hot furnace that various power frequencies are powered at present, mainly
Concentrate on Yunnan, Xinjiang, Gansu, Qinghai, Inner Mongol, six, Shaanxi province, also there are many uses in other provinces.Power frequency mineral hot furnace supplies
Electric process is by the three-phase 50Hz High Level AC Voltage of electrical network, is directly reduced to the three-phase electricity in supply mineral hot furnace after low pressure through transformator
Pole, because during work, low-voltage and high-current runs, short online reactance pressure drop reaches the 10～15% about of rated output voltage.This
On the one hand reduce actual enter stove power, so that the voltage pulsation on electrode is increased, the working of a furnace is difficult to grasp again, production efficiency decline,
Power factor of electric network reduces simultaneously, and minimum only 0.6 about, long-term work power consumption is serious, and thus determining power frequency mineral hot furnace is
Big power consumer, the cost of electric energy accounts for more than half of complete cost.
Another it should be seen that, the mineral hot furnace powered due to power frequency, between three-phase electrode, voltage is difficult to control balance, there is circulation,
Graphite electrode easily damages, and consumed electrode greatly, causes each manufacturing enterprise to bear very heavy, benefit is severely impacted.Simultaneously
Injection mains by harmonics content is big, so the mineral hot furnace that power frequency is powered is heavy polluter again, due to the industry manufacturer at home
Relatively many, power consumption is serious, and its product is Chinese national economy and world industry is indispensable, using the row of mineral hot furnace
Industry, its product not only meets domestic use, also exports every year and creates a large amount of foreign exchanges for country.
In order to solve the above problems, this utility model provides a kind of mineral hot furnace low frequency energy-saving system, and it is short that it reaches minimizing
Net exchange pressure drop, reduces reactive power, improves power factor, extend electrode life, increase the good results such as yield.
Utility model content
A purpose of the present utility model is to solve at least one the problems referred to above or defect, and provides general after at least one
The advantage illustrating.
This utility model, it is also an object that providing a kind of mineral hot furnace low frequency energy-saving system, which solves three-phase electrode
Between voltage be difficult to control balance, it is fragile to there is circulation, graphite electrode, the big problem of consumed electrode.
This utility model, it is also an object that providing a kind of mineral hot furnace low frequency energy-saving system, which solves power frequency and smelts
When, often due to stove internal short-circuit and make high-voltage switch gear Frequent trip, the problem that high-voltage switch gear often damages.
This utility model, it is also an object that providing a kind of mineral hot furnace low frequency energy-saving system, which solves three-phase uneven
Weighing apparatus, leads to mains by harmonics serious, power factor reduces, the serious problem of long-term work power consumption.
In order to realize according to these purposes of the present utility model and further advantage, this utility model provides a kind of mineral hot furnace
Low frequency energy-saving system, including：
Mineral hot furnace, described mineral hot furnace is powered using multi-electrode；
Low-frequency power, it is connected with described mineral hot furnace, provides electric supply to described mineral hot furnace；
Transformator, it is connected with described low-frequency power；
Controller, it is connected with described low-frequency power, controls the frequency of the electric supply of described low-frequency power output.
Add low-frequency power in the middle of described mineral hot furnace and described transformator, because frequency is very low, nearly equivalent to direct current,
Therefore arc stability, heating efficiency is high, so that short online reactance is reduced, so that the loss of voltage of short net reduces, improves into stove
Power.
Preferably, the frequency of the electric supply of the output of described low-frequency power is 0～10 hertz.
The frequency of the electric supply of the output of described low-frequency power is automatically adjusted by described controller.
Preferably, described low-frequency power includes three groups of single-phase frequency changer circuits of 120 ° of phase place mutual deviation, single-phase described in three groups
The input of frequency changer circuit is connected with the outfan of described transformator, receives the alternating voltage of described transformator output, three groups of institutes
The outfan stating single-phase frequency changer circuit is connected with described mineral hot furnace, provides electric supply for described mineral hot furnace.
Preferably, single-phase frequency changer circuit described in three groups include the first single-phase frequency changer circuit, the second single-phase frequency changer circuit and
3rd single-phase frequency changer circuit, described first single-phase frequency changer circuit includes antiparallel first group of three-phase thyristor rectification unit and
Two groups of three-phase thyristor rectification units, described second single-phase frequency changer circuit includes antiparallel 3rd group of three-phase thyristor rectification list
Unit and the 4th group of three-phase thyristor rectification unit, described 3rd single-phase frequency changer circuit includes antiparallel 5th group of three-phase thyristor
Rectification unit and the 6th group of three-phase thyristor rectification unit.
Preferably, to the often antiparallel two groups of three-phase thyristor rectification units in frequency changer circuit single-phase described in three groups according to
The secondary trigger pulse that applies in turn, so as to take turns to operate, forms a power cycle, specially：
Triggering is applied to described first group of three-phase thyristor rectification unit and described second group of three-phase thyristor rectification unit
Pulse, applies triggering arteries and veins to described second group of three-phase thyristor rectification unit and described 3rd group of three-phase thyristor rectification unit
Punching, applies trigger pulse to described 3rd group of three-phase thyristor rectification unit and described 4th group of three-phase thyristor rectification unit,
Trigger pulse is applied to described 4th group of three-phase thyristor rectification unit and described 5th group of three-phase thyristor rectification unit, to institute
State the 5th group of three-phase thyristor rectification unit and described 6th group of three-phase thyristor rectification unit applies trigger pulse, to described the
Six groups of three-phase thyristor rectification units and described first group of three-phase thyristor rectification unit apply trigger pulse, form low-frequency power
A cycle.
Preferably, triggering arteries and veins is applied successively in turn to the every three groups of three-phase thyristors in frequency changer circuit single-phase described in three groups
Punching, so as to take turns to operate, forms a power cycle, specially：
To described first group of three-phase thyristor rectification unit and described second group of three-phase thyristor rectification unit and the 3rd group
Three-phase thyristor rectification unit applies trigger pulse, to described second group of three-phase thyristor rectification unit and described 3rd group of three-phase
Thyristor rectifier unit and the 4th group of three-phase thyristor rectification unit apply trigger pulse, whole to described 3rd group of three-phase thyristor
Stream unit and described 4th group of three-phase thyristor rectification unit and the 5th group of three-phase thyristor rectification unit apply trigger pulse, right
Described 4th group of three-phase thyristor rectification unit and described 5th group of three-phase thyristor rectification unit and the 6th group of three-phase thyristor
Rectification unit applies trigger pulse, to described 5th group of three-phase thyristor rectification unit and described 6th group of three-phase thyristor rectification
Unit and first group of three-phase thyristor rectification unit apply trigger pulse, to described 6th group of three-phase thyristor rectification unit and institute
State first group of three-phase thyristor rectification unit and second group of three-phase thyristor rectification unit applies trigger pulse, to described first group
Three-phase thyristor rectification unit and described second group of three-phase thyristor rectification unit and described 3rd group of three-phase thyristor rectification list
Unit applies trigger pulse, forms a cycle of low-frequency power.
Preferably, described transformator is three three-phase transformers or secondary three phase-change pressure often mutually having multiple windings
Device.
The beneficial effects of the utility model
1st, a kind of mineral hot furnace low frequency energy-saving system that this utility model provides, it adopts low-frequency power so that frequency reduces,
Nearly equivalent to direct current so that arc stability, heating efficiency is high, and, so that short online reactance is reduced, the loss of voltage reduces, and carries
High enter stove power.
2nd, a kind of mineral hot furnace low frequency energy-saving system that this utility model provides, it improves the power factor of electrical network, can make electricity
The power factor of net reaches more than 0.92, improves into stove power, thus improve yield.
3rd, a kind of mineral hot furnace low frequency energy-saving system that this utility model provides, it makes electric current Kelvin effect problem little, electricity
Uniformly, electrode is in flat shape to pole scaling loss, and electrode erosion is few.
4th, a kind of mineral hot furnace low frequency energy-saving system that this utility model provides, it has an electrode electricity due to any moment
Stream is maximum, and is other two electrode current sums, when broken Electrode situation in smelting process, then fixes other electrodes
Run, broken Electrode can sinter quickly, do not affect to power.
5th, a kind of mineral hot furnace low frequency energy-saving system that this utility model provides, which solves high-voltage switch gear Frequent trip, high
Compress switch the frequent problem damaged.
6th, a kind of mineral hot furnace low frequency energy-saving system that this utility model provides, it adopts low-frequency power to power so that reactance
For the impact very little of short net, and short net is easy for installation, has saved installation cost.
7th, a kind of mineral hot furnace low frequency energy-saving system that this utility model provides, it is compared with main frequency furnace, noise very little, several
The operation sound of imperceptible circuit.
Brief description
Fig. 1 is the structural representation of mineral hot furnace low frequency energy-saving system described in the utility model；
Fig. 2 is the circuit diagram of single-phase frequency changer circuit described in the utility model；
Fig. 3 is the circuit diagram of mineral hot furnace low frequency energy-saving system described in the utility model；
Fig. 4 is electrode arrangement in the stove of mineral hot furnace described in the utility model.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
It should be appreciated that used herein such as " have ", "comprising" and " inclusion " term be not precluded from one or
The presence of multiple other elements or a combination thereof or interpolation.
As illustrated, this utility model provides a kind of mineral hot furnace low frequency energy-saving system, including：
Mineral hot furnace 1, described mineral hot furnace is powered using multi-electrode 15；
Low-frequency power 2, it is connected with described mineral hot furnace 1, provides electric supply to described mineral hot furnace 1；
Transformator 3, it is connected with described low-frequency power 2；
Controller 4, it is connected with described low-frequency power 2, controls the frequency of the electric supply of described low-frequency power 2 output.
Add described low-frequency power 2 in the middle of described mineral hot furnace 1 with described transformator 3, because frequency is very low, almost quite
In direct current, therefore arc stability, heating efficiency is high, so that short online reactance is reduced, so that the loss of voltage of short net reduces, improves
Enter stove power.
Described mineral hot furnace 1 is powered using multi-electrode 15, and for Large Electric Furnace, the concordance of the short net of three-phase is extremely to weigh
Want, powered with a three-phase transformer, be difficult to so that three-phase short net balance, therefore great majority all adopt three single-phase changes at present
Transformer power-supply is solving, but single-phase transformer output power factor is low, and the working of a furnace at three electrodes 15 in electric furnace is inconsistent not
Only result in three-phase imbalance, but also exacerbate the deterioration of the working of a furnace, the bad control of electric furnace.If being designed with three three-phase electricity
Furnace transformer, presses equilateral triangle arrangement around stove, now adopts low-frequency power, electrode in stove is changed into many from three electrodes
Electrode 15 is arranged, increased the quantity in Ji Xin garden, makes stove interior construction liquid agitation more severe, conductive circulation more preferably, saves
Electricity can be described as adding China on brocade with the effect increasing yield, and yield increase will be made to become apparent from, as shown in figure 4, three pole heart circles
Power can individually control it is easy to accomplish three-phase equilibrium, this will be highly beneficial to the operation of electric furnace.
On the basis of above-mentioned situation, another embodiment, the frequency of the electric supply of output of described low-frequency power 2 is
0～10 hertz.
The frequency of the electric supply of output of described low-frequency power 2 is automatically adjusted by described controller 4, due to frequency very
Low, nearly equivalent to direct current, therefore arc stability, heating efficiency is high, in addition, frequency reduces, makes short online reactance reduce (reactance
It is directly proportional to frequency) so that the loss of voltage of short net reduces, improve into stove power.Improve the power factor of electrical network.
, between 0.65～0.8, low-frequency power is suitable for the power factor that mineral hot furnace 1 electrical network that general power frequency is directly powered is surveyed
In DC rectifier it is considered to the impact of transformator leakage reactance, power factor of electric network can be made to reach more than 0.92, improve into stove power,
Thus improve yield.
On the basis of above-described embodiment, another embodiment, described low-frequency power 2 includes three groups of 120 ° of phase place mutual deviation
Single-phase frequency changer circuit 5, described in three groups, the input of single-phase frequency changer circuit is connected with the outfan of described transformator, receives described change
The alternating voltage of depressor 3 output, the outfan of single-phase frequency changer circuit described in three groups is connected with described mineral hot furnace 1, is described ore deposit heat
Stove 1 provides electric supply.
On the basis of above-described embodiment, another embodiment, described in three groups, single-phase frequency changer circuit 5 includes the first single-phase change
Frequency circuit 6, the second single-phase frequency changer circuit 7 and the 3rd single-phase frequency changer circuit 8, described first single-phase frequency changer circuit 6 includes inverse parallel
First group of three-phase thyristor rectification unit 9 and second group of three-phase thyristor rectification unit IGCT 10, described second single-phase change
Frequency circuit 7 includes antiparallel 3rd group of three-phase thyristor rectification unit 11 and the 4th group of three-phase thyristor rectification unit 12, institute
State that the 3rd single-phase frequency changer circuit 8 includes antiparallel 5th group of three-phase thyristor rectification unit 13 and the 6th group of three-phase thyristor is whole
Stream unit 14.
Single-phase frequency changer circuit 5 described in three groups, can be three-phase semiwave controlled rectification inverse parallel and three-phase bridge controlled rectification
Antiparallel two kinds of structure choice.
As shown in figure 3, the anode M of second group of three-phase thyristor rectification unit in described first single-phase frequency changer circuit and institute
The negative electrode M stating the 6th group of three-phase thyristor rectification unit in the 3rd single-phase frequency changer circuit connects, and forms triangle and connects.
On the basis of above-described embodiment, another embodiment, to the every inverse parallel in frequency changer circuit 5 single-phase described in three groups
Two groups of three-phase thyristor rectification units successively in turn apply trigger pulse so as to take turns to operate, formed a power cycle, tool
Body is：
Described first group of three-phase thyristor rectification unit 9 and described second group of three-phase thyristor rectification unit 10 are applied to touch
Send out pulse, described second group of three-phase thyristor rectification unit 10 and described 3rd group of three-phase thyristor rectification unit 11 are applied to touch
Send out pulse, described 3rd group of three-phase thyristor rectification unit 11 and described 4th group of three-phase thyristor rectification unit 12 are applied to touch
Send out pulse, described 4th group of three-phase thyristor rectification unit 12 and described 5th group of three-phase thyristor rectification unit 13 are applied to touch
Send out pulse, described 5th group of three-phase thyristor rectification unit 13 and described 6th group of three-phase thyristor rectification unit 14 are applied to touch
Send out pulse, described 6th group of three-phase thyristor rectification unit 14 and described first group of three-phase thyristor rectification unit 9 are applied to touch
Send out pulse, form a cycle of low-frequency power.
Wherein, the requirement to trigger pulse for the described low-frequency power is output one three phase low frequency signal, will export six tunnels simultaneously
The start pulse signal of three-phase controlled rectifier circuit.Described low-frequency power 2 circuit has 6 three-phase thyristor rectification units, gives
Described three-phase thyristor rectification unit applies trigger pulse, and this group commutator works, and is equivalent to switch closure, is not added with pulse, then
Be equivalent to and switch off, alternately apply trigger pulse to two groups of rectification units, load just produces alternating voltage, this 6 groups whole
Stream unit, every 2 groups take turns to operate, first group of three-phase thyristor rectification unit 9, second group of three-phase thyristor rectification unit 10, the
Three groups of three-phase thyristor rectification units 11, the 4th group of three-phase thyristor rectification units 12, the 5th group of three-phase thyristor rectification unit
13 and the 6th group of three-phase thyristor rectification unit be briefly referred to as 1,2,3,4,5 and 6, then by 12 → 23 → 34 → 45 → 56 →
61 modes are run, and 6 switch periods (12～23 ... 61) complete the cycle of a power supply, and switch switching is faster, power supply frequency
Rate is higher.Any one switch periods (such as 34 operation), always have an electrode (2# electrode) electric current maximum, and for other 2
Electrode current sum.Theoretical according to rectification circuit, the power factor of electrical network reaches as high as 0.965.
On the basis of above-described embodiment, another embodiment, to every three group three in frequency changer circuit 5 single-phase described in three groups
Phase IGCT applies trigger pulse successively in turn so as to take turns to operate, and forms a power cycle, specially：
To described first group of three-phase thyristor rectification unit 9, described second group of three-phase thyristor rectification unit 10 and described
3rd group of three-phase thyristor rectification unit 11 applies trigger pulse, to described second group of three-phase thyristor rectification unit 10 and described
3rd group of three-phase thyristor rectification unit 11 and the 4th group of three-phase thyristor rectification unit 12 apply trigger pulse, to the described 3rd
Group three-phase thyristor rectification unit 11 and described 4th group of three-phase thyristor rectification unit 12 and the 5th group of three-phase thyristor rectification
Unit 13 applies trigger pulse, to described 4th group of three-phase thyristor rectification unit 12 and described 5th group of three-phase thyristor rectification
Unit 13 and the 6th group of three-phase thyristor rectification unit 14 apply trigger pulse, to described 5th group of three-phase thyristor rectification unit
13 and described 6th group of three-phase thyristor rectification unit 14 and first group of three-phase thyristor rectification unit 9 apply trigger pulse, right
Described 6th group of three-phase thyristor rectification unit 14 and described first group of three-phase thyristor rectification unit 9 and second group of three-phase crystalline substance lock
Pipe rectification unit 10 applies trigger pulse, to described first group of three-phase thyristor rectification unit 9, described second group of three-phase thyristor
Rectification unit 10 and described 3rd group of three-phase thyristor rectification unit 11 apply trigger pulse, form a week of low-frequency power
Phase.
Wherein, the requirement to trigger pulse for the described low-frequency power is output one three phase low frequency signal, will export six tunnels simultaneously
The start pulse signal of three-phase controlled rectifier circuit.
6 groups of rectification units in described low-frequency power 2, also another kind of mode of operation, here it is be carved with three groups when each
Taking turns to operate, running by 123 → 234 → 345 → 456 → 561 → 612-123 mode.
On the basis of above-described embodiment, further embodiment, described transformator 3 is three three-phase transformers or one two
The secondary three-phase transformer often mutually having multiple windings.
The alternating current power supply that U1～U6 provides for transformator, the difference according to circuit structure and the difference of control method, certainly,
These power supplys can be 1 or 2 or 3, determines as the case may be.
This utility model adopts low-frequency power, low-frequency current approximate DC electric current so that electric current Kelvin effect problem very little,
Uniformly, electrode is in flat shape to electrode erosion, arc stability, and electrode erosion is few；And, electric power can be produced between electrode current,
Whenever current switching, electric power, by attracting to become repulsion (or being attracted by repelling to become), produces electromagnetic agitation in stove, so that hot
Power is uniform, and solution quick heating accelerates reduction reaction, shortens the heat, thus improving product quality and yield.Due to any
There is an electrode current maximum in moment, and is other two electrode current sums, when broken Electrode situation in smelting process
(such as No. 2 electrodes), then be fixed to No. 2 electrode power supplies 34 groups of operations (frequency be 0, be equivalent to direct current), then No. 2 electrode meetings
Sinter quickly.
Power frequency smelt when, often due to stove internal short-circuit and make high-voltage switch gear Frequent trip, high-voltage switch gear often damages.And make
When using low-frequency power, when producer internal short-circuit, block trigger pulse immediately, be effectively prevented high-voltage trip, press RESET
Button, can restart to produce again.High-voltage switch gear uses as disconnecting switch, substantially prolongs the life-span of high-voltage switch gear.
This utility model is realized to the low frequency power supply of mineral hot furnace, reaches minimizing short net exchange pressure drop, reduces reactive power, carry
High Power Factor, extends electrode life, increases the good results such as yield.
This utility model also has other selective embodiments, just no longer elaborates here.
Although embodiment of the present utility model is disclosed as above, it is not restricted in description and embodiment
Listed utilization, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
It is easily achieved other modification, therefore under the general concept being limited without departing substantially from claim and equivalency range, this reality
It is not limited to specific details with new and shown here as the legend with description.
Claims (7)
1. a kind of mineral hot furnace low frequency energy-saving system is it is characterised in that include：
Mineral hot furnace, described mineral hot furnace is powered using multi-electrode；
Low-frequency power, it is connected with described mineral hot furnace, provides electric supply to described mineral hot furnace；
Transformator, it is connected with described low-frequency power；
Controller, it is connected with described low-frequency power, controls the frequency of the electric supply of described low-frequency power output.
2. mineral hot furnace low frequency energy-saving system as claimed in claim 1 is it is characterised in that the electric power of the output of described low-frequency power
The frequency of power supply is 0～10 hertz.
3. mineral hot furnace low frequency energy-saving system as claimed in claim 2 is it is characterised in that described low-frequency power includes phase place mutual deviation
120 ° of three groups of single-phase frequency changer circuits, described in three groups, the input of single-phase frequency changer circuit is connected with the outfan of described transformator,
Receive the alternating voltage of described transformator output, described in three groups, the outfan of single-phase frequency changer circuit is connected with described mineral hot furnace, is
Described mineral hot furnace provides electric supply.
4. mineral hot furnace low frequency energy-saving system as claimed in claim 3 is it is characterised in that single-phase frequency changer circuit described in three groups includes
First single-phase frequency changer circuit, the second single-phase frequency changer circuit and the 3rd single-phase frequency changer circuit, described first single-phase frequency changer circuit includes
Antiparallel first group of three-phase thyristor rectification unit and second group of three-phase thyristor rectification unit, described second single-phase variable-frequency electric
Road includes antiparallel 3rd group of three-phase thyristor rectification unit and the 4th group of three-phase thyristor rectification unit, and the described 3rd is single-phase
Frequency changer circuit includes antiparallel 5th group of three-phase thyristor rectification unit and the 6th group of three-phase thyristor rectification unit.
5. mineral hot furnace low frequency energy-saving system as claimed in claim 4 is it is characterised in that in frequency changer circuit single-phase described in three groups
Often antiparallel two groups of three-phase thyristor rectification units successively in turn apply trigger pulse so as to take turns to operate, formed one
Power cycle, specially：
Trigger pulse is applied to described first group of three-phase thyristor rectification unit and described second group of three-phase thyristor rectification unit,
Trigger pulse is applied to described second group of three-phase thyristor rectification unit and described 3rd group of three-phase thyristor rectification unit, to institute
State the 3rd group of three-phase thyristor rectification unit and described 4th group of three-phase thyristor rectification unit applies trigger pulse, to described the
Four groups of three-phase thyristor rectification units and described 5th group of three-phase thyristor rectification unit apply trigger pulse, to described 5th group
Three-phase thyristor rectification unit and described 6th group of three-phase thyristor rectification unit apply trigger pulse, to described 6th group of three-phase
Thyristor rectifier unit and described first group of three-phase thyristor rectification unit apply trigger pulse, form a week of low-frequency power
Phase.
6. mineral hot furnace low frequency energy-saving system as claimed in claim 4 is it is characterised in that in frequency changer circuit single-phase described in three groups
Every three groups of three-phase thyristors successively in turn apply trigger pulse so as to take turns to operate, formed a power cycle, specially：
To described first group of three-phase thyristor rectification unit and described second group of three-phase thyristor rectification unit and described 3rd group
Three-phase thyristor rectification unit applies trigger pulse, to described second group of three-phase thyristor rectification unit and described 3rd group of three-phase
Thyristor rectifier unit and described 4th group of three-phase thyristor rectification unit apply trigger pulse, to described 3rd group of three-phase crystalline substance lock
Pipe rectification unit and described 4th group of three-phase thyristor rectification unit and described 5th group of three-phase thyristor rectification unit apply to touch
Send out pulse, to described 4th group of three-phase thyristor rectification unit and described 5th group of three-phase thyristor rectification unit and the described 6th
Group three-phase thyristor rectification unit applies trigger pulse, to described 5th group of three-phase thyristor rectification unit and described 6th group three
Phase thyristor rectifier unit and described first group of three-phase thyristor rectification unit apply trigger pulse, brilliant to described 6th group of three-phase
Brake tube rectification unit and described first group of three-phase thyristor rectification unit and described second group of three-phase thyristor rectification unit apply
Trigger pulse, to described first group of three-phase thyristor rectification unit and described second group of three-phase thyristor rectification unit and described
Three groups of three-phase thyristor rectification units apply trigger pulse, form a cycle of low-frequency power.
7. mineral hot furnace low frequency energy-saving system as claimed in claim 1 is it is characterised in that described transformator is three three phase-change pressure
Device or secondary every mutually three-phase transformer for Multiple coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621010103.7U CN205986657U (en) | 2016-08-31 | 2016-08-31 | Hot stove low frequency economizer system in ore deposit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621010103.7U CN205986657U (en) | 2016-08-31 | 2016-08-31 | Hot stove low frequency economizer system in ore deposit |
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| CN205986657U true CN205986657U (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621010103.7U Active CN205986657U (en) | 2016-08-31 | 2016-08-31 | Hot stove low frequency economizer system in ore deposit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000481A (en) * | 2018-09-21 | 2018-12-14 | 大连重工机电设备成套有限公司 | A kind of variable dc circuit In The Sub-mergedfurnace of The Ferroalloys |
-
2016
- 2016-08-31 CN CN201621010103.7U patent/CN205986657U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000481A (en) * | 2018-09-21 | 2018-12-14 | 大连重工机电设备成套有限公司 | A kind of variable dc circuit In The Sub-mergedfurnace of The Ferroalloys |
| CN109000481B (en) * | 2018-09-21 | 2023-07-25 | 大连重工机电设备成套有限公司 | Variable direct current flows back to Lu Tiege gold ore deposit hot stove |
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