CN2299878Y - Energy-saving DC power supply for rare earth electrolysis - Google Patents
Energy-saving DC power supply for rare earth electrolysis Download PDFInfo
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- CN2299878Y CN2299878Y CN 96235989 CN96235989U CN2299878Y CN 2299878 Y CN2299878 Y CN 2299878Y CN 96235989 CN96235989 CN 96235989 CN 96235989 U CN96235989 U CN 96235989U CN 2299878 Y CN2299878 Y CN 2299878Y
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- Prior art keywords
- transformer
- thyristor
- connect
- current
- rectifier
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- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 19
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 9
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model relates to a direct current power supply suitable for rare earth electrolysis. The basic electronic circuit comprises a switch loop, a rectifier transformer, a direct current transformer, a pulse transformer, a current conversion overcurrent protection and current automatic regulation circuit and a relay controller. The key point is that the transformer is designed into a voltage-dividing gear-shifting mode, namely, six secondary sides of the transformer are respectively connected with a thyristor, one branch led by each secondary side is also respectively connected with a thyristor, and the twelve thyristors are respectively connected with twelve pulse transformers, so that the voltage is ensured to be changed at 0-36V during furnace starting and heating and at 8-10V during electrolysis, thereby improving the efficiency and reducing the energy consumption.
Description
The utility model is a kind ofly alternating-current can be converted to galvanic continuous-current plant, the rare earth electrolysis energy-saving DC electric source of using in particularly a kind of Rare Earth Production.
The employed direct supply of Rare Earth Production is divided three classes substantially at present: the first kind is to adopt the transformer transformation, the silicon rectifier rectification, and transformer is regulated primary voltage by voltate regulator and is regulated outward current; Second class is on first kind basis, adds magnetic saturation reactor on the former limit of transformer and regulates the rectification outward current; The 3rd class adopts the transformer transformation, uses thyristor rectifier, regulates the conduction angle of thyristor and adjusts outward current.This three classes direct supply unification exists following shortcoming with not enough: 1. power consumption is high, and efficient is low, about day power consumption 860KWh; 2. electrolysis when operation power factor low (have only 30% more), applied power is big, and transformer and regulation system temperature rise thereof are unfavorable for life-time service; 3. failure rate height, the upkeep cost height, and influence the quality of electrolysis production; 4. it is big to move noise, can reach 70 decibels.
The utility model purpose is at the prior art weak point, design a kind of energy-saving and cost-reducing, applied power and breakdown rate and the rare earth electrolysis direct supply that improves the quality of products when reducing the electrolysis operation.
It is in the rare earth electrolysis production process that the utility model is not counted thought, when playing stove and heating voltage is changed at 0～36V, needs 8V～10V during electrolysis approximately, and the spy is designed to its structure in electrolysis, is under the different voltages when playing the stove heating.Based on this; the basic circuit of the utility model design comprises switch loop, rectifier transformer, direct current instrument transformer, pulse transformer, voltage transitions, overcurrent protection and electric current auto-adjusting circuit; Relay-controlled Circuit, three-phase alternating current is by K switch M, through two current transformer TC
1TC
2, connecing three former limits of transformer, six transformers are paid and are respectively connect a thyristor on the limit, are respectively V
11, V
12, V
13, V
14, V
15, V
16, and each transformer pays and draws a branch line ball on the limit, is connected with 6 thyristors on these 6 branch line balls, is respectively V
21, V
22V
23, V
24, V
25, V
2612 thyristors connect two groups of 12 pulse transformers again respectively; this two group pulses transformer is connected to voltage transitions, overcurrent protection and electric current auto-adjusting circuit again, Relay-controlled Circuit connecting and disconnecting K switch M, voltage transitions, overcurrent protection and electric current auto-adjusting circuit.
The former limit of rectifier transformer is one group of fixedly winding, and secondary adopts double reverse-stars type to add paralleing reactor, and each of double reverse-stars type has one group of 34.5V winding and one group of 13V dividing potential drop winding mutually, respectively connects its 12 thyristors again respectively; Two K switch M of two former edge joints of transformer in the rectifier transformer
1, KM
2, 6 transformers are paid and are respectively connect a thyristor in the change.Add a magnetic saturation reactor between switch and the rectifier transformer, this reactor has a current control winding, after the current control winding is connected to bridge rectifier, regulates rectification output by voltate regulator.
The utility model also can become design of transformer former limit, and voltage stepping mode is promptly by two K switch M
1, KM
2Connect two former limits of transformer respectively, pay at 6 transformers and respectively connect a thyristor in the change, be respectively V
1, V
2, V
3, V
4, V
5, V
6, 6 thyristors connect 6 pulse transformers again respectively, and this pulse transformer connects voltage transitions, overcurrent protection and electric current auto-adjusting circuit, Relay-controlled Circuit again.KM
1When the former limit winding that is connect was worked, paying a limit phase voltage was 13V.KM
2When the former limit winding that is connect was worked, paying a limit phase voltage was 34.5V.
The rectifier transformer original edge voltage also can be regulated by transductor in the utility model, be that magnetic saturation reactor output is added on the former limit of rectifier transformer, after being connected to bridge rectifier, the current control winding that is arranged in magnetic saturation reactor regulates its size of current by voltate regulator, rectifier transformer is paid and also is connected to paralleing reactor on the limit, and thyristor groups, commutation diode group are connected to 34.5V group and the 13V group that rectifier transformer is paid the limit respectively.
Said current setting and voltage transitions current foldback circuit by regulate part, overcurrent protection part, voltage gear conversion portion totally three parts constitute.Detailed structure is as shown in Figure 4:
Regulate part electric current set-point and DC feedback value are carried out exporting to the phase-shift pulse link of being made up of TCA788 after PID regulates, the pulse of generation out of phase removes to trigger thyristor.Overcurrent protection is partly compared with overcurrent set(ting)value and electrolytic actual value, when actual current surpasses set(ting)value, and output HIGH voltage, it is given to block TCA788 and electric current, and pulse is stopped, and the electric current vanishing after pending fault disposes, can work on.Voltage gear conversion portion is compared by setting voltage and feedback voltage, 15V group thyristor (V when voltage 15V is following
2Group) work.36V group (V when 15V is above
1Group) thyristor work.
The utility model has the advantages that:
1, efficient height, energy consumption is low, day about 530KWh of power consumption, than about old system day economize on electricity 330KWh, (330 * 365) 120,000 KWh if whole year operation can economize on electricity.(amount to Renminbi 0.36 * 12 * 10
4=4.3 ten thousand yuan).
2, applied power is 32KVA during electrolysis, and original system is 92KVA, can produce three effects like this:
A, can make 380V net day economize on electricity (92-32) * 24 * 0.2=288KWh of operation, year economize on electricity 100,000 KWh.
B, failure rate is reduced, reliability improves.Furnace outage time is reduced, and production output and quality all improve greatly.Thereby increased profit.
C, the capacity of electrolysis power is reduced, can reduce the expense of increasing capacity of power supply system.
3, noise reduces greatly during electrolysis production, only has an appointment 40 decibels.
Description of drawings:
Fig. 1, Fig. 2, Fig. 3 are the utility model electrical block diagram.
Fig. 4 is adopted current setting and voltage gear change-over circuit by the utility model.
Embodiment 1:
In Fig. 1 structure, earlier the 380V three-phase alternating current is reduced to the double reverse-stars type system that six phase phase voltages are respectively 34.5V and 13V, 34.5V and 13V are passed through six thyristor rectifiers respectively.K during electrolysis
7Be in excited state, thereby two group pulse transformers are energized the thyristor that triggers the 13V group, device is in 0～15V working order; K when having heated stove
7Be in nonexcited state 34.5V group pulse transformer and be energized, trigger 34.5V group thyristor, system is in 0～36V working order.The current setting process of two kinds of working ordeies is realized by the electric current varitrol.Embodiment 2:
Fig. 2 is a transformer original edge voltage stepping mode, KM
1The phase voltage of low-tension side is 13V during connection, KM
2The phase voltage of low-tension side is 34.5V during connection, KM
1, KM
2Can not connect simultaneously.KM
1Thyristor rectifier is output as 0～36V during connection, KM
2Output voltage is 0～15V during connection.Embodiment 3:
Figure 3 shows that the 380V three-phase alternating current by transductor, is added on the former limit that rectification becomes, secondary is a structure shown in the figure one, and thyristor is blocked during electrolysis, and the 13V group is output as 0～15V 2500A by the silicon rectifier diode rectification, and electrolysis has begun stove, K during heating
6Closure, two utmost point groups are blocked, and the thyristor groups rectification is output as 0～36V2500A.
Claims (5)
1, the energy-saving DC electric source is used in a kind of rare earth electrolysis, and its basic circuit comprises switch loop (1), rectifier transformer (2), direct current instrument transformer TC
3(3), thyristor tripping pulse transformer (4), voltage transitions, overcurrent protection and electric current auto-adjusting circuit (5), Relay-controlled Circuit (6), it is characterized in that: switch (1) KM is by two current transformer TC
1, TC
2Connect three former limits of transformer, six in transformer is paid on the limit and is respectively connect a thyristor, is respectively V
11, V
12, V
13, V
14, V
15, V
16, and each transformer pays and draws a branch line ball on the limit again, connects 6 day brake tube again on this minute line ball, is respectively V
21, V
22, V
23, V
24, V
25, V
26, 12 thyristors connect two groups 12 pulse transformers (4) again respectively, and this two group pulses transformer connects voltage transitions, overcurrent protection and electric current auto-adjusting circuit (5), Relay-controlled Circuit (6) again;
2, direct supply according to claim 1 is characterized in that: K switch M
1(or KM
2) by two current transformer TC
1, TC
2Connect the former limit 1 (or former limit 2) of transformer, six in transformer is paid on the limit and is respectively connect a thyristor, is respectively V
1, V
2, V
3, V
4, V
5, V
6, 6 thyristors connect 6 pulse transformers (4) again respectively, and this pulse transformer connects voltage transitions, overcurrent protection and electric current auto-adjusting circuit (5), Relay-controlled Circuit (6) again.
3, direct supply according to claim 1, it is characterized in that: the former limit of rectifier transformer (2) is one group of fixedly winding, secondary adopts double reverse-stars type to add paralleing reactor, each of double reverse-stars type has one group of 34.5V winding and one group of 13V dividing potential drop winding mutually, respectively connects totally 12 thyristors again respectively;
4, direct supply according to claim 2 is characterized in that: two K switch M of two former edge joints of transformer in the rectifier transformer (2)
1, KM
2, 6 transformers are paid and are respectively connect a thyristor in the change.
5, direct supply according to claim 1, it is characterized in that between switch (1) and rectifier transformer (2), adding a magnetic saturation reactor, this reactor has a current control winding, after the current control winding is connected to bridge rectifier, regulates rectification output by voltate regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96235989 CN2299878Y (en) | 1996-06-15 | 1996-06-15 | Energy-saving DC power supply for rare earth electrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96235989 CN2299878Y (en) | 1996-06-15 | 1996-06-15 | Energy-saving DC power supply for rare earth electrolysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2299878Y true CN2299878Y (en) | 1998-12-09 |
Family
ID=33911907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96235989 Expired - Fee Related CN2299878Y (en) | 1996-06-15 | 1996-06-15 | Energy-saving DC power supply for rare earth electrolysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2299878Y (en) |
-
1996
- 1996-06-15 CN CN 96235989 patent/CN2299878Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |