CN201478833U - Ore-smelting electric furnace short network of three-phase three-pole triangle structure - Google Patents
Ore-smelting electric furnace short network of three-phase three-pole triangle structure Download PDFInfo
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- CN201478833U CN201478833U CN2009201384677U CN200920138467U CN201478833U CN 201478833 U CN201478833 U CN 201478833U CN 2009201384677 U CN2009201384677 U CN 2009201384677U CN 200920138467 U CN200920138467 U CN 200920138467U CN 201478833 U CN201478833 U CN 201478833U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model discloses an ore-smelting electric furnace short network of a three-phase three-pole triangle structure. The ore-smelting electric furnace short network comprises three poles, the electrical connection structure of which is a three-phase triangle, wherein the length of a conductor in one of the three poles is longer or shorter than that of the conductors in other two poles. The ore-smelting electric furnace short network is characterized in that the area of the cross section of the conductor in one of the three poles is larger or smaller than that of the conductors in other two poles. As the length of the conductor in one of the three poles is longer or shorter than that of the conductors in other two poles, and the area of the cross section of the conductor in one of the three poles is larger or smaller than that of the conductors in other two poles, the impedance of the conductor in one pole can be changed by changing the area of the cross section of the conductor, thus balancing the impedances of the other two poles; and the impedances of the three poles are balanced as much as possible, thus improving the power factors and reducing the reactive power loss. The ore-smelting electric furnace short network of the three-phase three-pole triangle structure has the advantages of simple structure, low cost and high reliability.
Description
Technical field
The utility model belongs to metallurgical ore-smelting electric furnace technical field, relates to the short net of ore-smelting electric furnace, especially the short net of the ore-smelting electric furnace of three-phase three polar triangle structures.
Background technology
In the ore-smelting electric furnace system, so-called short net is meant from the secondary termination of transformer to the general name of the secondary bus of submerged arc electrode.Bus is exactly the conductor of carrying in stove up to hundreds of thousands even the big electric current of millions of amperes.It mainly comprises transformer secondary exit, temperature compensator, bus-bar (or pipe bus bundle), terminal block, flexible cable and electrode etc., in order to reduce electric energy loss, circuit will be lacked as far as possible between power supply and the electrode, and the bus-bar likeness in form is netted, so the secondary leading-out terminal of furnace transformer is called short net to the transmitting loop between electrode (not containing electrode), and this is sense stricto short net.In fact, electrode and attached conductive component thereof also are high-current conductors, then are sensu lato short net as it being extended down to the electrode lower end.When not being specifically noted on the common engineering, generally be meant sense stricto short net.
In the ore-smelting electric furnace system, the connection type of its short net wiring is a lot, and every type all has a lot of prioritization schemes, be to install reactor or capacitor etc. additional mostly, purpose all is in order to improve power factor, reduces reactive loss, and wherein one of type of common employing is three-phase three polar triangle systems.In three-phase three polar triangle systems, in electrode, flow through the electric current, what short net remainder flow through all is phase current, the alternate positive and negative compensation is better; Advantage is that compact conformation, investment are little, is convenient to processing, and occupation area of equipment is little, equipment investment is less, easy to maintenance, and failure rate is low; But the short net of every phase is different in size, and impedance is unbalanced.
Adopt such technology certainly normally in the ore-smelting electric furnace system, to use, but because the short net of every phase is different in size, impedance is unbalanced, cause three-phase compensation unbalanced, power factor is low, though can install reactor additional or capacitor comes balance, but after link increases, cost strengthens, and reliability reduces, and the device that installs additional also can increase energy consumption.
The utility model content
For overcoming the deficiency of the short net systems technology of existing three-phase three polar triangles, the utility model aims to provide a kind of short net of ore-smelting electric furnace of three-phase three polar triangle structures, need not install the just impedance of energy balance three-phase three utmost points of reactor or capacitor in addition additional.
The technical scheme that the utility model adopted is: the short net of a kind of ore-smelting electric furnace of three-phase three polar triangle structures, comprise that electric connection structure is leg-of-mutton three utmost points of three-phase, three extremely in wherein the conductor length of a utmost point be greater than or less than the length of all the other the two poles of the earth conductors, the described wherein conductor cross-sectional area of a utmost point is greater than or less than the cross-sectional area of all the other the two poles of the earth conductors.
The conductor length of a described wherein utmost point is greater than the length of all the other the two poles of the earth conductors, and the conductor cross-sectional area of this utmost point is greater than the cross-sectional area of all the other the two poles of the earth conductors.
The conductor length of a described wherein utmost point is less than the length of all the other the two poles of the earth conductors, and the conductor cross-sectional area of this utmost point is less than the cross-sectional area of all the other the two poles of the earth conductors.
The length of described all the other the two poles of the earth conductors and conductor cross-sectional area equate.
The beneficial effects of the utility model are: since three extremely in wherein the conductor length of a utmost point be greater than or less than the length of all the other the two poles of the earth conductors, the described wherein conductor cross-sectional area of a utmost point is greater than or less than the cross-sectional area of all the other the two poles of the earth conductors.Thereby can change the impedance at its all the other the two poles of the earth of impedance balance by the change of the conductor cross-sectional area of a utmost point wherein, make three utmost point impedances balance as far as possible, thereby the raising power factor reduces reactive loss, has advantage simple in structure, that cost is low, reliability is high.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the circuit connection diagram of first kind of embodiment of the utility model;
Fig. 2 is first kind of short-and-medium net conductors cross of embodiment of the utility model schematic perspective view;
Fig. 3 is the circuit connection diagram of second kind of embodiment of the utility model;
Fig. 4 is second kind of short-and-medium net conductors cross of embodiment of the utility model schematic perspective view.
Label is described as follows in the accompanying drawing:
A conductor 1, A ' conductor 2, B conductor 3, B ' conductor 4, C conductor 5, C ' conductor 6, electrode 7, three-phase transformer 8
Embodiment
First kind of embodiment of the utility model, as shown in Figure 1 and Figure 2, the short net of a kind of ore-smelting electric furnace of three-phase three polar triangle structures, comprise that electric connection structure is leg-of-mutton three utmost points of three-phase, the conductor length of a described wherein utmost point is greater than the length of all the other the two poles of the earth conductors, the conductor cross-sectional area of this utmost point is greater than the cross-sectional area of all the other the two poles of the earth conductors, and the length of described all the other the two poles of the earth conductors and conductor cross-sectional area equate.
A conductor 1, A ' conductor 2 constitute the A phase; B conductor 3, B ' conductor 4 constitute the B phase; C conductor 5, C ' conductor 6 constitute the C phase; Adopt three-phase triangle connected mode to be electrically connected with three electrodes 7 and three-phase transformer 8.
The conductor length of A conductor 1, A ' conductor 2 is greater than the length of B conductor 3, B ' conductor 4, C conductor 5, C ' conductor 6, the conductor cross-sectional area of A conductor 1, A ' conductor 2 is greater than the conductor cross-sectional area of B conductor 3, B ' conductor 4, C conductor 5, C ' conductor 6, and the length of B conductor 3, B ' conductor 4, C conductor 5, C ' conductor 6 and conductor cross-sectional area equate.
Second kind of embodiment of the utility model, as shown in Figure 3, Figure 4, the short net of a kind of ore-smelting electric furnace of three-phase three polar triangle structures, comprise that electric connection structure is leg-of-mutton three utmost points of three-phase, the conductor length of a described wherein utmost point is less than the length of all the other the two poles of the earth conductors, the conductor cross-sectional area of this utmost point is less than the cross-sectional area of all the other the two poles of the earth conductors, and the length of described all the other the two poles of the earth conductors and conductor cross-sectional area equate.
A conductor 1, A ' conductor 2 constitute the A phase; B conductor 3, B ' conductor 4 constitute the B phase; C conductor 5, C ' conductor 6 constitute the C phase; Adopt three-phase triangle connected mode to be electrically connected with three electrodes 7 and three-phase transformer 8.
The conductor length of A conductor 1, A ' conductor 2 is less than the length of B conductor 3, B ' conductor 4, C conductor 5, C ' conductor 6, the conductor cross-sectional area of A conductor 1, A ' conductor 2 is less than the conductor cross-sectional area of B conductor 3, B ' conductor 4, C conductor 5, C ' conductor 6, and the length of B conductor 3, B ' conductor 4, C conductor 5, C ' conductor 6 and conductor cross-sectional area equate.
Principle of the present utility model is: calculate come in and go out stove electric current, voltage according to the furnace volume size earlier, calculate current density, voltage, the current impedance that the every rice grain pattern of short net is crossed according to electric current and potentiometer again, conductive cross-sectional area according to short net calculates wherein impedance and the voltage damage of two-phase from the transformer secondary exit to electrode, numerical value according to this two-phase calculates another mutually needed electric conductor sectional area again, impedance and voltage from the transformer secondary exit to electrode are decreased, and three-phase is consistent.
Technology of the present utility model, the ore-smelting electric furnace that is not limited to three-phase three polar triangle electric connection structures is lacked net, and the short net of the ore-smelting electric furnace of all the other electric connection structures can be analogized application equally.
Claims (4)
1. the ore-smelting electric furnace of three-phase three polar triangle structures is lacked net, comprise that electric connection structure is leg-of-mutton three utmost points of three-phase, three extremely in wherein the conductor length of a utmost point be greater than or less than the length of all the other the two poles of the earth conductors, it is characterized in that: the described wherein conductor cross-sectional area of a utmost point is greater than or less than the cross-sectional area of all the other the two poles of the earth conductors.
2. the short net of the ore-smelting electric furnace of a kind of three-phase three polar triangle structures according to claim 1, it is characterized in that: the conductor length of a described wherein utmost point is greater than the length of all the other the two poles of the earth conductors, and the conductor cross-sectional area of this utmost point is greater than the cross-sectional area of all the other the two poles of the earth conductors.
3. the short net of the ore-smelting electric furnace of a kind of three-phase three polar triangle structures according to claim 1, it is characterized in that: the conductor length of a described wherein utmost point is less than the length of all the other the two poles of the earth conductors, and the conductor cross-sectional area of this utmost point is less than the cross-sectional area of all the other the two poles of the earth conductors.
4. according to the short net of the ore-smelting electric furnace of claim 1 or 2 or 3 described a kind of three-phase three polar triangle structures, it is characterized in that: the length of described all the other the two poles of the earth conductors and conductor cross-sectional area equate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201384677U CN201478833U (en) | 2009-05-27 | 2009-05-27 | Ore-smelting electric furnace short network of three-phase three-pole triangle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201384677U CN201478833U (en) | 2009-05-27 | 2009-05-27 | Ore-smelting electric furnace short network of three-phase three-pole triangle structure |
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| Publication Number | Publication Date |
|---|---|
| CN201478833U true CN201478833U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201384677U Expired - Fee Related CN201478833U (en) | 2009-05-27 | 2009-05-27 | Ore-smelting electric furnace short network of three-phase three-pole triangle structure |
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| CN (1) | CN201478833U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472305A (en) * | 2013-09-26 | 2013-12-25 | 中国恩菲工程技术有限公司 | Measurement device and measurement method of electrode impedance of three-electrode electric furnace |
| CN106211409A (en) * | 2016-08-30 | 2016-12-07 | 三门峡强芯铸造材料有限公司 | A kind of short net of Novel smelting |
-
2009
- 2009-05-27 CN CN2009201384677U patent/CN201478833U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472305A (en) * | 2013-09-26 | 2013-12-25 | 中国恩菲工程技术有限公司 | Measurement device and measurement method of electrode impedance of three-electrode electric furnace |
| CN103472305B (en) * | 2013-09-26 | 2016-03-30 | 中国恩菲工程技术有限公司 | The measurement mechanism of the electrode impedance of three electrode electric furnaces and measuring method thereof |
| CN106211409A (en) * | 2016-08-30 | 2016-12-07 | 三门峡强芯铸造材料有限公司 | A kind of short net of Novel smelting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20110527 |