CN201733237U - Graphitization furnace power supply device - Google Patents
Graphitization furnace power supply device Download PDFInfo
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- CN201733237U CN201733237U CN2010202411072U CN201020241107U CN201733237U CN 201733237 U CN201733237 U CN 201733237U CN 2010202411072 U CN2010202411072 U CN 2010202411072U CN 201020241107 U CN201020241107 U CN 201020241107U CN 201733237 U CN201733237 U CN 201733237U
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- transformer
- power supply
- supply device
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- winding
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- 238000005087 graphitization Methods 0.000 title abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 21
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 6
- 230000016507 interphase Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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Abstract
The utility model relates to a power supply device, in particular to a graphitization furnace power supply device favoring improving efficiency of a graphitization furnace and reducing energy consumption, which comprises a transformer primary winding and a transformer secondary winding. A three-phase power supply of the transformer primary winding is respectively connected with one end of each bidirectional thyristor, the other ends of the bidirectional thyristors are respectively connected with an adjacent one-phase power supply and the adjacent bidirectional thyristor, an output end of the transformer secondary winding is respectively connected with anodes of diodes, cathodes of the triodes are connected with a direct-current bus, and the direct-current bus is connected with a load. The graphitization furnace power supply device adopts a three-phase five-post transformer double reverse star-shaped rectifying circuit primary side for voltage regulation and a secondary side for rectifying, and omits a voltage regulating autotransformer. Accordingly, additional loss is reduced, secondary side rectifying element power consumption is decreased, rectification efficiency is improved, simultaneously reactive component is reduced, active component is increased, and power factor is increased.
Description
Technical field
The utility model relates to a kind of electric supply installation, relates in particular to a kind of graphitizing furnace electric supply installation of improving graphitizing furnace efficient, cutting down the consumption of energy of helping.
Background technology
China's graphitizing furnace all adopts the direct current supply mode at present, and its circuit load characteristics are low-voltage and high-currents, and the graphitizing furnace electric supply installation generally is made of transformer, rectifier cabinet, dc bus.The rectifier of this supply power mode has multiple version, as: three-phase bridge rectifier, the double-reverse star rectification device of band interphase reactor, the three-phase and five-pole transformer double reverse-stars type rectifier of cancellation interphase reactor, different rectifier structure forms, its final rectification effect also is not quite similar.
Three-phase bridge rectifier is the most frequently used a kind of rectification circuit, can be regarded as the series connection of two groups of three-phase semiwave circuit, and under the identical situation of output current, rectifier cell current ratio double-reverse star rectification circuit is big, and the power component loss is also high.
The double-reverse star rectification device of band interphase reactor is the parallel connection of two groups of three-phase semiwave circuit, and under the identical situation of output current, the rectifier cell electric current is little than three-phase bridge rectifier circuit, and the power component loss is also low.But, increased the loss of whole electric supply installation virtually again owing to increased interphase reactor.
In addition from transformer device structure, more than two kinds of rectification schemes all adopt three-column transformer, because the magnetic flux that produces on its three iron cores influences each other in twos, continuous variation along with input voltage phase, cause the magnetic flux on three posts all uneven, do not wait thereby every voltage of output mutually can occur, will directly influence the effect of rectified waveform.
The three-phase and five-pole transformer double reverse-stars type rectification scheme of cancellation interphase reactor, transformer is owing to increased by two limit yokes on the basis of three posts, well balance the magnetic flux of three-phase, make in the middle of three posts reach the standard grade the bag magnetic flux all than balance, at output the phenomenon that each phase voltage differs greatly can not appear.The six pulse wave double reverse-stars type rectifiers that three-phase and five-pole transformer constitutes can save the interphase reactor between neutral point.
More than three kinds of rectification modes of connection, wider with the third application.But adopt which kind of version all to exist following problem for the power supply of direct-current graphitization stove:
The first, because in the graphitization production process, the carbon deblocking temperature is in the variation, very large variation takes place in resistance, the electric current that applies from tens amperes to several kiloamperes, extremely wide excursion, making to detect and accurately regulate becomes the problem that the graphitizing furnace power supply at first faces; The second, graphitization production is high power consumption process, how to reduce supply harmonic in electric process, and improving power factor also is the major issue that must solve; The 3rd, be the integrity problem of electric supply installation, how to control accurately at the assurance electric supply installation, higher rectification efficiency reaches under the prerequisite of lower loss, guarantees the high stability of device work, and low fault also is the problem that needs consideration.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of graphitizing furnace electric supply installation, and purpose is in order to reduce the rectifying device loss, increases effective power, thus improve rectifying device efficient, cut down the consumption of energy, improve the stability of device work.
The utility model is achieved by the following technical solution in order to achieve the above object:
A kind of electric supply installation of graphitizing furnace, it comprises winding of transformer, transformer secondary winding, the three phase mains of a winding of transformer is connected with an end of bidirectional triode thyristor respectively, the other end of each bidirectional triode thyristor is connected on respectively between an adjacent phase power supply and the bidirectional triode thyristor, the output of transformer secondary winding is connected with the positive pole of diode respectively, the negative pole of diode is connected with dc bus, and dc bus is connected with load.
Described transformer secondary winding construction is: a and a ' be around one unshakable in one's determination mutually, and b, b ', c, c ' around one mutually on the iron core, are connected into two groups of three-plase half wave rectifier circuits with them respectively, and a, b, c are the positive group, and a ', b ', c ' oppositely organize.
The utility model has the advantages of: the utility model is to adopt three-phase and five-pole transformer double reverse-stars type rectification circuit primary side to carry out pressure regulation, the secondary side rectification, promptly install the high-power regulator of controllable silicon additional at the transformer primary side, secondary side adopts two groups of three-plase half wave rectifier circuits output in parallel, six pulse wave DC power supply, cancellation variac.Owing to adopted three-phase and five-pole transformer, two limit yokes greatly reduce supplementary load loss for the zero sequence magnetic flux in frequency tripling harmonic flux or the asymmetrical component provides path, and secondary side rectifier cell power consumption reduces, and rectification efficiency is improved.Idle component reduces simultaneously, and meritorious increasing improved power factor.In addition, adopt the high-power regulator of controllable silicon to replace variac, can utilize the controllable characteristics of thyristor, regulate input voltage automatically.Graphitizing process is operated on the best temperature rise curve, keep optimum condition, this point is extremely important to guaranteeing graphitizing quality.While makes the graphitization resistance variations controlled, thereby can shorten graphitization time along with voltage is adjustable continuously.The high-power regulator of controllable silicon adopt PLC control by communication bus can with the intelligent distribution system communication, realize that the automation of distribution and technology controlling and process is controlled.
Description of drawings
Fig. 1 is the circuit structure diagram of the utility model graphitizing furnace electric supply installation.
Among the figure: 1, winding of transformer; 2, transformer secondary winding; 3, bidirectional triode thyristor; 4, diode; 5, dc bus; 6, load.
Embodiment
As shown in Figure 1, the electric supply installation of a kind of graphitizing furnace of the utility model, structure is as follows: it comprises winding 1 of transformer, transformer secondary winding 2, the three phase mains of a winding 1 of transformer is connected with an end of bidirectional triode thyristor 3 respectively, the other end of each bidirectional triode thyristor 3 is connected on respectively between an adjacent phase power supply and the bidirectional triode thyristor 3, the output of transformer secondary winding 2 is connected with the positive pole of diode 4 respectively, the negative pole of diode 4 is connected with dc bus 5, and dc bus 5 is connected with load 6.
As shown in Figure 1, above-mentioned transformer secondary winding 2 structures are as follows: a and a ' be around one unshakable in one's determination mutually, b, b ', c, c ' are respectively around one mutually on the iron core, they are connected into two groups of three-plase half wave rectifier circuits, and a, b, c are the positive group, and a ', b ', c ' oppositely organize.The output of two groups of three-plase half wave rectifier circuit parallel connections is the output of six pulse waves.
Claims (2)
1. the electric supply installation of a graphitizing furnace, it comprises a winding of transformer (1), transformer secondary winding (2), the three phase mains that it is characterized in that a winding of transformer (1) is connected with an end of bidirectional triode thyristor (3) respectively, the other end of each bidirectional triode thyristor (3) is connected on respectively between an adjacent phase power supply and the bidirectional triode thyristor (3), the output of transformer secondary winding (2) is connected with the positive pole of diode (4) respectively, the negative pole of diode (4) is connected with dc bus (5), and dc bus (5) is connected with load (6).
2. the electric supply installation of graphitizing furnace according to claim 1, it is characterized in that described transformer secondary winding (2) structure is: a is unshakable in one's determination mutually around one with a ', b, b ', c, c ' are respectively around one mutually on the iron core, they are connected into two groups of three-plase half wave rectifier circuits, a, b, c are the positive group, and a ', b ', c ' oppositely organize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202411072U CN201733237U (en) | 2010-06-29 | 2010-06-29 | Graphitization furnace power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202411072U CN201733237U (en) | 2010-06-29 | 2010-06-29 | Graphitization furnace power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733237U true CN201733237U (en) | 2011-02-02 |
Family
ID=43524393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202411072U Expired - Lifetime CN201733237U (en) | 2010-06-29 | 2010-06-29 | Graphitization furnace power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315784A (en) * | 2010-06-29 | 2012-01-11 | 沈阳铝镁设计研究院有限公司 | Power supply device of graphitization furnace |
| CN105800591A (en) * | 2014-12-30 | 2016-07-27 | 贵阳铝镁设计研究院有限公司 | High temperature graphitized electrical calciner |
-
2010
- 2010-06-29 CN CN2010202411072U patent/CN201733237U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315784A (en) * | 2010-06-29 | 2012-01-11 | 沈阳铝镁设计研究院有限公司 | Power supply device of graphitization furnace |
| CN105800591A (en) * | 2014-12-30 | 2016-07-27 | 贵阳铝镁设计研究院有限公司 | High temperature graphitized electrical calciner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENYANG ALUMINUM + MAGNESIUM ENGINEERING + RESEAR Free format text: FORMER NAME: SHENYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee after: Shenyang Aluminum & Magnesium Engineering & Research Institute Co., Ltd. Address before: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee before: Shenyang Aluminium and Magnesium Design Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |