CN221240141U - Device arrangement structure for connecting adjustable power supply with submerged arc furnace - Google Patents
Device arrangement structure for connecting adjustable power supply with submerged arc furnace Download PDFInfo
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- CN221240141U CN221240141U CN202322624104.7U CN202322624104U CN221240141U CN 221240141 U CN221240141 U CN 221240141U CN 202322624104 U CN202322624104 U CN 202322624104U CN 221240141 U CN221240141 U CN 221240141U
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- 238000005516 engineering process Methods 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims 5
- 238000005065 mining Methods 0.000 claims 5
- 238000003723 Smelting Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 241000227287 Elliottia pyroliflora Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model discloses a device arrangement structure for connecting an ore-smelting furnace with an adjustable power supply, wherein the ore-smelting furnace is internally provided with a U electrode, a V electrode and a W electrode respectively, the three electrodes are respectively connected with a first adjustable power supply system, a second adjustable power supply system and a third adjustable power supply system, each group of adjustable power supply systems comprises a three-phase permanent magnet transformer, an adjustable power supply cabinet, an ore-smelting furnace adjustable short-net system and an adjustable power supply control cabinet, the output of the ore-smelting furnace adjustable short-net system in the first adjustable power supply system is a and x, the output of the ore-smelting furnace adjustable short-net system in the second adjustable power supply system is b and y, and the output of the ore-smelting furnace adjustable short-net system in the third adjustable power supply system is c and z. The utility model changes the fixed frequency power supply mode into the adjustable power supply mode, regulates the power supply for the submerged arc furnace, reduces the reactive power loss of the transformer and the high-current conductive system, achieves the purpose of energy saving, solves the reactive power loss at the source and achieves the purpose of energy saving and consumption reduction.
Description
Technical Field
The utility model relates to the technical field of submerged arc furnace energy conservation, in particular to a device arrangement structure for connecting an adjustable power supply with a submerged arc furnace.
Background
In recent years, along with the good development of the economy in China, the large-capacity submerged arc furnace also has great development. Because the submerged arc furnace has large capacity, large reactive power loss, low operation efficiency and high power consumption of unit products, enterprises hope to reform the submerged arc furnace by a direct current technology so as to achieve the purposes of energy conservation and consumption reduction.
Many schemes of the direct current submerged arc furnace modified at present are basically to adopt multi-loop direct current power supply, such as a two-electrode or four-electrode rectangular direct current submerged arc furnace, and the polarity of the direct current power supply submerged arc furnace is not adjustable. Because the polarity of the direct current power supply is not adjustable, the anode effect is particularly obvious, the anode power is far greater than the cathode power, and a great temperature gradient difference is caused in the submerged arc furnace, so that the smelting in the furnace is seriously influenced, and the aims of saving energy and reducing consumption are not achieved.
The existing submerged arc furnace adopts alternating current power supply, and a power supply system comprises a high-voltage power supply system, a transformer, a short net, a water-cooling cable, a high-current conductive contact element or copper bush, an electrode and other systems. Most enterprises are provided with low-voltage reactive compensation devices in order to reduce the loss of a low-voltage power supply system, but the energy-saving effect is not obvious. Because the transformer, the short net, the water-cooled cable, the heavy-current conducting system and the electrode are low-voltage heavy-current systems, the impedance of the system is high, the reactive power loss is high, the unit power consumption of the product is high, and the economic benefit of enterprises is seriously affected.
Disclosure of Invention
The utility model aims to solve the problems in the background art and provides a device arrangement structure for connecting an adjustable power supply powered submerged arc furnace.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the device arrangement structure that hot stove of adjustable power supply ore deposit is connected, the conduction system in the hot stove of ore deposit has U electrode 13, V electrode 14 and W electrode 15 respectively, the hot stove of ore deposit is connected with adjustable power supply system No. one through three electrodes, adjustable power supply system No. two, adjustable power supply system No. three, every group of adjustable power supply system includes three-phase permanent magnet transformer, adjustable power cabinet, ore deposit adjustable short network system, adjustable power control cabinet, the output of the adjustable short network system of ore deposit in the adjustable power supply system of No. one is a, x, output a, x is connected with U electrode 13, V electrode 14 respectively, the output of the adjustable short network system of ore deposit in the adjustable power supply system of No. two is b, y, output b, y is connected with V electrode 14, W electrode 15 respectively, the output of the adjustable short network system of ore deposit in the adjustable power supply system of No. three is c, z, output c, z is connected with W electrode 15, U electrode 13 respectively.
In the arrangement structure of the device for connecting the adjustable power supply ore-smelting furnace, the high-voltage side of the three-phase permanent magnet transformer is connected with a high-voltage cable through a high-voltage switch, and the low-voltage side of the three-phase permanent magnet transformer is connected with a star-shaped coil and a triangle-shaped coil and is connected with the adjustable power supply cabinet through the two coils.
In the arrangement structure of the device for connecting the adjustable power supply submerged arc furnace, the adjustable power supply cabinet comprises a first adjustable power supply cabinet and a second adjustable power supply cabinet, and the low-voltage side of the three-phase permanent magnet transformer is connected with the first adjustable power supply cabinet through the star-shaped coil and connected with the second adjustable power supply cabinet through the triangular coil.
In the arrangement structure of the device for connecting the adjustable power supply ore-smelting furnace, the first adjustable power supply cabinet and the second adjustable power supply cabinet are respectively connected with the adjustable power supply control cabinet.
In the arrangement structure of the device for connecting the ore smelting furnace with the adjustable power supply, the first adjustable power supply cabinet and the second adjustable power supply cabinet are respectively connected with the ore smelting furnace adjustable short network system through low-voltage adjustable power supply buses.
In the arrangement structure of the device for connecting the adjustable power supply ore-smelting furnace, the first adjustable power supply cabinet and the second adjustable power supply cabinet are respectively connected with the cooling system.
In the arrangement structure of the device for connecting the adjustable power supply ore-smelting furnace, the first adjustable power supply cabinet and the second adjustable power supply cabinet respectively use the silicon controlled elements to realize the AC-AC adjustable technology, thereby realizing the conversion of power supply.
In the arrangement structure of the device for connecting the submerged arc furnace with the adjustable power supply, the first adjustable power supply cabinet and the second adjustable power supply cabinet respectively use the silicon controlled rectifier, the diode and the IGBT element to realize the alternating current-direct current-alternating current technology, thereby realizing the conversion of the power supply.
The beneficial effects of the utility model are as follows:
The utility model is connected with the submerged arc furnace through three groups of adjustable power supply systems, each group of adjustable power supply systems adopts a three-phase permanent magnet transformer, the method does not change the original furnace structure, only the original transformer is removed, and then the three-phase permanent magnet transformers are added, the high-voltage sides of the three-phase permanent magnet transformers are respectively connected with three high-voltage switches, the low-voltage sides are connected with two adjustable power supply cabinets in the adjustable power supply cabinets through two coils, and the output sides of the adjustable power supply cabinets in the three groups of adjustable power supply systems are respectively connected with three-phase electrodes of the submerged arc furnace; after the technical measures are taken, the fixed-frequency power supply mode is changed into the adjustable-frequency power supply mode, and the adjustable power supply is adopted for the submerged arc furnace, so that the reactive power loss of the transformer and the high-current conductive system is reduced, the purpose of saving energy is achieved, the reactive power loss of the submerged arc furnace low-voltage high-current system is solved at the source, the reactive power loss of the electrode in the furnace is reduced, and the purposes of saving energy and reducing consumption are achieved.
Drawings
FIG. 1 is a diagram illustrating the connection of the structural system of the present utility model;
FIG. 2 is a connection diagram of a first adjustable power supply system according to the present utility model;
FIG. 3 is a diagram of a second adjustable power supply system connection in the present utility model;
fig. 4 is a connection diagram of a third adjustable power supply system in the present utility model.
Detailed Description
The utility model is further elucidated with reference to the drawings.
Referring to fig. 1 to 4, the utility model provides a device arrangement structure for connecting an adjustable power supply with a submerged arc furnace, wherein a submerged arc furnace 16, a conductive system in the submerged arc furnace 16 is respectively provided with a U electrode 13, a V electrode 14 and a W electrode 15, the submerged arc furnace 16 is connected with a first adjustable power supply system 1, a second adjustable power supply system 2 and a third adjustable power supply system 3 through three electrodes, and each group of adjustable power supply systems comprises a three-phase permanent magnet transformer 4, an adjustable power supply cabinet 5, a submerged arc furnace adjustable short network system 6 and an adjustable power supply control cabinet 7.
The adjustable power supply cabinet 5 comprises a first adjustable power supply cabinet 5-1 and a second adjustable power supply cabinet 5-2, wherein the high-voltage side of the three-phase permanent magnet transformer 4 is connected with a high-voltage cable through a high-voltage switch 8, and particularly, one end of the three-phase permanent magnet transformer is connected with a 110kV line through a 110kV switch; the low-voltage side of the three-phase permanent magnet transformer 4 is connected with a star-shaped coil 9 and a triangle-shaped coil 10, the low-voltage side of the three-phase permanent magnet transformer 4 is connected with a first adjustable power cabinet 5-1 through the star-shaped coil 9, and is connected with a second adjustable power cabinet 5-2 through the triangle-shaped coil 10; the two coils and the 12 terminals of the secondary side of the three-phase permanent magnet transformer supply power to the first adjustable power cabinet 5-1 and the second adjustable power cabinet 5-2 through two groups of power sources which form different connection methods and have a phase difference of 30 degrees, the tops of the two adjustable power cabinets are connected with the outlet terminals of the three-phase permanent magnet transformer, every 6 terminals of the three-phase permanent magnet transformer are connected with one adjustable power cabinet, and the first adjustable power cabinet 5-1 and the second adjustable power cabinet 5-2 form a 12-pulse direct current power system.
The first adjustable power supply cabinet 5-1 and the second adjustable power supply cabinet 5-2 are respectively connected with the adjustable power supply control cabinet 7, and meanwhile, the first adjustable power supply cabinet 5-1 and the second adjustable power supply cabinet 5-2 are respectively connected with the mine furnace adjustable short network system 6 through low-voltage adjustable power supply buses; the output of the ore furnace adjustable short-net system 6 in the first adjustable power supply system 1 is a and x, the output a and x are respectively connected with the U electrode 13 and the V electrode 14, the output of the ore furnace adjustable short-net system 6 in the second adjustable power supply system 2 is b and y, the output b and y are respectively connected with the V electrode 14 and the W electrode 15, the output of the ore furnace adjustable short-net system 6 in the third adjustable power supply system 3 is c and z, and the output c and z are respectively connected with the W electrode 15 and the U electrode 13.
The method is characterized in that the device is used for arranging and connecting to form an adjustable power supply system for supplying power to the electric submerged arc furnace, the original furnace structure is not changed, only the original transformer is removed, a three-phase permanent magnet transformer is added, the high-voltage sides of the three-phase permanent magnet transformers are respectively connected with three high-voltage switches, the low-voltage sides of the three-phase permanent magnet transformers are respectively connected with two adjustable power supply cabinets in the adjustable power supply cabinet through two coils, and the output sides of the adjustable power supply cabinets in the three groups of adjustable power supply systems are respectively connected with three-phase electrodes of the submerged arc furnace; after the technical measures are taken, the fixed-frequency power supply mode is changed into an adjustable power supply mode, and the purpose of saving energy is achieved by reducing reactive power loss of a transformer and a large-current conducting system through adopting an adjustable power supply for the submerged arc furnace, so that the reactive power loss of a low-voltage large-current system of the submerged arc furnace is solved at the source, the reactive power loss of an electrode in the furnace is reduced, and the purposes of saving energy and reducing consumption are achieved.
Furthermore, the first and second adjustable power supply cabinets 5-1 and 5-2 respectively use controllable silicon elements to realize AC-AC adjustable technology, so as to realize power supply conversion, or the first and second adjustable power supply cabinets 5-1 and 5-2 respectively use controllable silicon, diode and IGBT elements to realize AC-DC-AC technology, so as to realize power supply conversion; the selection and the use are carried out according to the actual demands, so that the operation is very convenient; meanwhile, the first adjustable power cabinet 5-1 and the second adjustable power cabinet 5-2 are respectively connected with the cooling system 12, so that heat dissipation of the thyristors and the semiconductor elements in the adjustable power cabinets is realized.
The above describes in detail the arrangement structure of the device for connecting the adjustable power supply with the submerged arc furnace provided by the embodiment of the present utility model, and specific examples are applied to illustrate the principle and implementation of the present utility model, and the description of the above embodiment is only used to help understand the technical scheme disclosed by the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.
Claims (8)
1. The utility model provides a hot stove of adjustable power supply ore deposit connects device arrangement structure, hot stove in ore deposit (16), has U electrode (13), V electrode (14) and W electrode (15) respectively in hot stove in ore deposit (16), its characterized in that: the ore furnace (16) is connected with an adjustable power supply system I (1), an adjustable power supply system II (2) and an adjustable power supply system III (3) through three electrodes, each group of adjustable power supply system comprises a three-phase permanent magnet transformer (4), an adjustable power cabinet (5), an ore furnace adjustable short-net system (6) and an adjustable power control cabinet (7), the output of the ore furnace adjustable short-net system (6) in the adjustable power supply system I (1) is a and x, the output a and x are respectively connected with a U electrode (13) and a V electrode (14), the output of the ore furnace adjustable short-net system (6) in the adjustable power supply system II (2) is b and y, the output b and y are respectively connected with the V electrode (14) and a W electrode (15), the output of the ore furnace adjustable short-net system (6) in the adjustable power supply system III (3) is c and z, and the output c and z are respectively connected with the W electrode (15) and the U electrode (13).
2. The arrangement of devices for connection of an adjustable power supply mining heating furnace according to claim 1, wherein: the high-voltage side of the three-phase permanent magnet transformer (4) is connected with a high-voltage cable through a high-voltage switch (8), and the low-voltage side of the three-phase permanent magnet transformer (4) is connected with a star-shaped coil (9) and a triangle-shaped coil (10) and is connected with an adjustable power cabinet (5) through the two coils.
3. The arrangement of devices for connection of an adjustable power supply mining heating furnace according to claim 2, wherein: the adjustable power supply cabinet (5) comprises a first adjustable power supply cabinet (5-1) and a second adjustable power supply cabinet (5-2), wherein the low-voltage side of the three-phase permanent magnet transformer (4) is connected with the first adjustable power supply cabinet (5-1) through a star-shaped coil (9), and is connected with the second adjustable power supply cabinet (5-2) through a triangle-shaped coil (10).
4. A device arrangement for an adjustable mains-powered submerged arc furnace connection according to claim 3, characterized in that: the first adjustable power supply cabinet (5-1) and the second adjustable power supply cabinet (5-2) are respectively connected with the adjustable power supply control cabinet (7).
5. The arrangement of devices for connection of an adjustable power supply mining heating furnace according to claim 4, wherein: the first adjustable power supply cabinet (5-1) and the second adjustable power supply cabinet (5-2) are respectively connected with the ore furnace adjustable short network system (6) through low-voltage adjustable power supply buses.
6. An arrangement of devices for connection of an adjustable power supply-powered submerged arc furnace according to claim 3 or 4 or 5, characterized in that: the first adjustable power cabinet (5-1) and the second adjustable power cabinet (5-2) are respectively connected with the cooling system (12).
7. The arrangement of devices for connection of an adjustable power supply mining heating furnace according to claim 6, wherein: the first adjustable power cabinet (5-1) and the second adjustable power cabinet (5-2) respectively use controllable silicon elements to realize AC-AC adjustable technology, thereby realizing power conversion.
8. The arrangement of devices for connection of an adjustable power supply mining heating furnace according to claim 6, wherein: the first adjustable power cabinet (5-1) and the second adjustable power cabinet (5-2) respectively use a silicon controlled rectifier, a diode and IGBT elements to realize AC-DC-AC technology, so as to realize power conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322624104.7U CN221240141U (en) | 2023-09-27 | 2023-09-27 | Device arrangement structure for connecting adjustable power supply with submerged arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322624104.7U CN221240141U (en) | 2023-09-27 | 2023-09-27 | Device arrangement structure for connecting adjustable power supply with submerged arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221240141U true CN221240141U (en) | 2024-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322624104.7U Active CN221240141U (en) | 2023-09-27 | 2023-09-27 | Device arrangement structure for connecting adjustable power supply with submerged arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221240141U (en) |
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2023
- 2023-09-27 CN CN202322624104.7U patent/CN221240141U/en active Active
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