SU472980A1 - GAS-OXYGEN FURMA3 P T B ^ • ^ - ^: ":" "- - W'SH1 The invention relates to the field of metallurgy, in particular, can be used in steelmaking. A known gas-oxygen lance for blowing melts with preliminary mixing of gases ( fuel and oxygen), which consists of coaxially arranged pipes and a head with nozzles with a central supply of cooling water. However, this lance is not equipped with a device that prevents flame from leaking from the nozzles to the mixing unit. Combustion of a mixture of gas and oxygen inside the annular supply path leads to cut In the proposed gas-oxygen tuyere, in order to prevent flame penetration from the purge nozzles into the fuel-oxygen path, the latter in the lower part is divided by an annular water-cooled partition with openings (an annular partition is manufactured metal, for example copper), an annular gas manifold is placed under the partition, which communicates with the purge nozzles. FIG. 1 shows the gas-oxygen |) urma in section; in fig. 2 is the same; the section along A — A in FIG. 1. The described lance consists of three coaxial alipulations of the pipes, through which, like in an ordinary oxygen lance, the head I is fed, and water is drained from it, and purging gas is fed into it. The lance has a central-axial supply of water 2 to the head I 5 for cooling, channels 3 for draining water from the cetiral cavity of the head into the inter-pipe cavity 4 of the lance. Channels 3 are evenly distributed between the nozzles 5. In the tail part of the tuyere, as in the known tuyeres, there are 10 nozzles b and 7, respectively, for iodachi in the tuyere and removal of water for cooling from it, as well as the nozzles 8 and 9, respectively, for introducing oxygen into the tuyere and fuel (gas). In addition, in the tail part of the tuyere, at the 15th level of the tubing 9, there is a mixing ring 10, which overlaps the annular gap formed by the central (axial) pipe 11 and the separation pipe 12. The mixing ring 10 is sealed 20 (for example, by welding), welded or with one of these pipes or with both. In the first case, the circumferential docking with the pipe has a seal 13. The mixing ring 10 contains a series of vertical holes — mixing nozzles 14, through which from the upper part 15 of the annular gap, blocked by ring 10, oxygen passes into the fuel-oxygen path 16. The mixing nozzles 14 in the lower part are articulated with openings 17, which serve to supply gaseous - Google Patents
GAS-OXYGEN FURMA3 P T B ^ • ^ - ^: ":" "- - W'SH1 The invention relates to the field of metallurgy, in particular, can be used in steelmaking. A known gas-oxygen lance for blowing melts with preliminary mixing of gases ( fuel and oxygen), which consists of coaxially arranged pipes and a head with nozzles with a central supply of cooling water. However, this lance is not equipped with a device that prevents flame from leaking from the nozzles to the mixing unit. Combustion of a mixture of gas and oxygen inside the annular supply path leads to cut In the proposed gas-oxygen tuyere, in order to prevent flame penetration from the purge nozzles into the fuel-oxygen path, the latter in the lower part is divided by an annular water-cooled partition with openings (an annular partition is manufactured metal, for example copper), an annular gas manifold is placed under the partition, which communicates with the purge nozzles. FIG. 1 shows the gas-oxygen |) urma in section; in fig. 2 is the same; the section along A — A in FIG. 1. The described lance consists of three coaxial alipulations of the pipes, through which, like in an ordinary oxygen lance, the head I is fed, and water is drained from it, and purging gas is fed into it. The lance has a central-axial supply of water 2 to the head I 5 for cooling, channels 3 for draining water from the cetiral cavity of the head into the inter-pipe cavity 4 of the lance. Channels 3 are evenly distributed between the nozzles 5. In the tail part of the tuyere, as in the known tuyeres, there are 10 nozzles b and 7, respectively, for iodachi in the tuyere and removal of water for cooling from it, as well as the nozzles 8 and 9, respectively, for introducing oxygen into the tuyere and fuel (gas). In addition, in the tail part of the tuyere, at the 15th level of the tubing 9, there is a mixing ring 10, which overlaps the annular gap formed by the central (axial) pipe 11 and the separation pipe 12. The mixing ring 10 is sealed 20 (for example, by welding), welded or with one of these pipes or with both. In the first case, the circumferential docking with the pipe has a seal 13. The mixing ring 10 contains a series of vertical holes — mixing nozzles 14, through which from the upper part 15 of the annular gap, blocked by ring 10, oxygen passes into the fuel-oxygen path 16. The mixing nozzles 14 in the lower part are articulated with openings 17, which serve to supply gaseousInfo
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- SU472980A1 SU472980A1 SU1953200A SU1953200A SU472980A1 SU 472980 A1 SU472980 A1 SU 472980A1 SU 1953200 A SU1953200 A SU 1953200A SU 1953200 A SU1953200 A SU 1953200A SU 472980 A1 SU472980 A1 SU 472980A1
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Description
ного топлива пз кольцевой камеры 18 в смесительные сопла 14, которые в нилаюй части 19 могут быть расширены.pz of the annular chamber 18 into the mixing nozzles 14, which can be expanded into nilay parts 19.
Если топливно-кислородный тракт больше, чем тот, нри котором горение в камере с холодными стенками затухает (наиример, более 4-6 мм), то в нем р дом с головкой фурмы расиолагают кольцевую перегородку 20, вмонтированную , например, между головкой 1 и разделительной трубой 12 и имеюшую р д отверстий 21 или кольцевую щель 22 дл пропуска газовой смеси к соплам. Диаметр отверстий 21, как и ширину кольцевой щели 22, выбирают таким, чтобы предотвратить проскок пламени из сопел 5 в топливно-кислородный тракт 16, например в большинстве случаев не более 4-6 мм при высоте кольцевой перегородки , многократно большей этой величины. Те же требовани относ тс и к соплам 14, и к отверсти м 17. Между головкой 1 фурмы и кольцевой перегородкой 20 находитс кольцевой газовый коллектор 23.If the fuel-oxygen path is larger than the one in which the combustion in the chamber with cold walls fades out (naimer, more than 4-6 mm), then in it, next to the lance head, there is an annular partition 20, mounted, for example, between the head 1 and a separating pipe 12 and having a number of holes 21 or an annular slot 22 for passing the gas mixture to the nozzles. The diameter of the holes 21, as well as the width of the annular slit 22, is chosen so as to prevent flame from passing through the nozzles 5 into the fuel-oxygen path 16, for example in most cases no more than 4-6 mm with an annular partition height many times greater than this value. The same requirements apply to the nozzles 14 and the openings 17. Between the tuyere head 1 and the annular partition 20 there is an annular gas manifold 23.
Работает фурма следующим образом. После подачи воды на ох,:1аждение включают подачу в фурму кислорода (или воздуха), который, пройд патрубок 8 и межтрубный зазор 15, поступает в смесительные сопла 14. При прохождении кислорода (воздуха) через эти сопла создаетс определенное разрежение в отверсти х 17, что преп тствует перетоку кислорода в кольцевую камеру 18 и в патрубок 9. После подачи в фурму кислорода включают подачу в нее газообразного топлива. Оно поступает через патрубок 9 в кольцевую камеру 18 и из нее равномерными потоками через отверстие 17 в смесительные сопла, откуда в виде топлиБно-кислородной (воздушной) смеси вход т в топливно-кислородный тракт 16. Пройд через отверсти 21 или через кольцевую щель 22 кольцевой перегородки 20, гор ча смесь поступает в кольцевой газовый коллектор 23, а из него равномерно в сопла 5. При достаточно большом диаметре соиел 5 п.там может проскочить в кольцевой газовый коллектор 23. Однако дальнейше.му продвижению пламени навстречу движению горючей смеси должна воспреп тствовать кольцева перегородка 20.Works lance as follows. After the water is supplied to oh,: the precipitation includes the supply of oxygen (or air) into the lance, which, after passing through the pipe 8 and the annular gap 15, enters the mixing nozzles 14. When oxygen (air) passes through these nozzles, a certain vacuum is created in the holes 17 which prevents the oxygen from flowing into the annular chamber 18 and into the port 9. After the oxygen is supplied to the lance, the gaseous fuel is introduced into it. It enters through the nozzle 9 into the annular chamber 18 and from it uniformly flows through the opening 17 into the mixing nozzles, from where it enters the fuel-oxygen path 16 as a gas-oxygen (air) mixture 16. Pass through the holes 21 or through the annular gap 22 annular bulkheads 20, the hot mixture enters the annular gas collector 23, and from it evenly into the nozzles 5. At a sufficiently large diameter, it has 5 parts. It can slip into the annular gas collector 23. However, further progress of the flame towards the movement of combustible the mixture should be prevented by a ring partition 20.
Ее узкие каналы в виде отверстий 21 или щели 22 .призваны погасить плам , так как в узких каналах с холодными стенками (кольцева перегородка 20 с одной стороны интенсивно охлаждаетс водой) горение прекращаетс .Its narrow channels in the form of holes 21 or slots 22 are called upon to extinguish the flame, since in narrow channels with cold walls (ring partition 20 on the one hand is intensively cooled with water) burning stops.
Такую преграду дл распрострапе1И1 пламени вверх цо фурме создает и сам топливно-кислородный тракт 16, если рассто ние между его холодными ох.таждаемыми водой стенками достаточно мало.Such an obstacle to the spreading of the flame upward of the tuyere is created by the fuel-oxygen path 16 itself, if the distance between its cold walls and the walls filled with water is sufficiently small.
Таким образом, за исключением хвостовой части предложеииа газо-кислородна фурма не вл етс более сложной, чем обычные фурмы , предназначенные дл продувки одним кислородом .Thus, with the exception of the tail section of the proposal, the gas-oxygen tuyere is not more complex than conventional tuyeres designed for blowing with oxygen alone.
Предмет изобретени Subject invention
Газо-кислородна фурма дл продувки расплавов с предварительным смешением газов,Gas-oxygen lance for purging melts with preliminary mixing of gases,
состо ща из коаксиально расположенных труб и головки с соплами с центральным подводом охлаждающей воды, о т л и чающа с тем, что, с целью предотвращени проскока пламени в топливно-кислородиый тракт, вconsisting of coaxially arranged pipes and a head with nozzles with a central supply of cooling water, so that, in order to prevent flame penetration into the fuel-oxygen path,
иижней части топливно-кислородный тракт снабжен кольцевой перегородкой с отверсти ми , под которой выполнен кольцевой газовый коллектор, сообщающийс с соплами.At the lower end, the fuel-oxygen path is provided with an annular partition with openings under which an annular gas manifold is made, which communicates with the nozzles.
ВодаWater
НислородNislorod
Пр. lajEtc. laj
4-/four-/
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1953200A SU472980A1 (en) | 1973-08-03 | 1973-08-03 | GAS-OXYGEN FURMA3 P T B ^ • ^ - ^: ":" "- - W'SH1 The invention relates to the field of metallurgy, in particular, can be used in steelmaking. A known gas-oxygen lance for blowing melts with preliminary mixing of gases ( fuel and oxygen), which consists of coaxially arranged pipes and a head with nozzles with a central supply of cooling water. However, this lance is not equipped with a device that prevents flame from leaking from the nozzles to the mixing unit. Combustion of a mixture of gas and oxygen inside the annular supply path leads to cut In the proposed gas-oxygen tuyere, in order to prevent flame penetration from the purge nozzles into the fuel-oxygen path, the latter in the lower part is divided by an annular water-cooled partition with openings (an annular partition is manufactured metal, for example copper), an annular gas manifold is placed under the partition, which communicates with the purge nozzles. FIG. 1 shows the gas-oxygen |) urma in section; in fig. 2 is the same; the section along A — A in FIG. 1. The described lance consists of three coaxial alipulations of the pipes, through which, like in an ordinary oxygen lance, the head I is fed, and water is drained from it, and purging gas is fed into it. The lance has a central-axial supply of water 2 to the head I 5 for cooling, channels 3 for draining water from the cetiral cavity of the head into the inter-pipe cavity 4 of the lance. Channels 3 are evenly distributed between the nozzles 5. In the tail part of the tuyere, as in the known tuyeres, there are 10 nozzles b and 7, respectively, for iodachi in the tuyere and removal of water for cooling from it, as well as the nozzles 8 and 9, respectively, for introducing oxygen into the tuyere and fuel (gas). In addition, in the tail part of the tuyere, at the 15th level of the tubing 9, there is a mixing ring 10, which overlaps the annular gap formed by the central (axial) pipe 11 and the separation pipe 12. The mixing ring 10 is sealed 20 (for example, by welding), welded or with one of these pipes or with both. In the first case, the circumferential docking with the pipe has a seal 13. The mixing ring 10 contains a series of vertical holes — mixing nozzles 14, through which from the upper part 15 of the annular gap, blocked by ring 10, oxygen passes into the fuel-oxygen path 16. The mixing nozzles 14 in the lower part are articulated with openings 17, which serve to supply gaseous |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1953200A SU472980A1 (en) | 1973-08-03 | 1973-08-03 | GAS-OXYGEN FURMA3 P T B ^ • ^ - ^: ":" "- - W'SH1 The invention relates to the field of metallurgy, in particular, can be used in steelmaking. A known gas-oxygen lance for blowing melts with preliminary mixing of gases ( fuel and oxygen), which consists of coaxially arranged pipes and a head with nozzles with a central supply of cooling water. However, this lance is not equipped with a device that prevents flame from leaking from the nozzles to the mixing unit. Combustion of a mixture of gas and oxygen inside the annular supply path leads to cut In the proposed gas-oxygen tuyere, in order to prevent flame penetration from the purge nozzles into the fuel-oxygen path, the latter in the lower part is divided by an annular water-cooled partition with openings (an annular partition is manufactured metal, for example copper), an annular gas manifold is placed under the partition, which communicates with the purge nozzles. FIG. 1 shows the gas-oxygen |) urma in section; in fig. 2 is the same; the section along A — A in FIG. 1. The described lance consists of three coaxial alipulations of the pipes, through which, like in an ordinary oxygen lance, the head I is fed, and water is drained from it, and purging gas is fed into it. The lance has a central-axial supply of water 2 to the head I 5 for cooling, channels 3 for draining water from the cetiral cavity of the head into the inter-pipe cavity 4 of the lance. Channels 3 are evenly distributed between the nozzles 5. In the tail part of the tuyere, as in the known tuyeres, there are 10 nozzles b and 7, respectively, for iodachi in the tuyere and removal of water for cooling from it, as well as the nozzles 8 and 9, respectively, for introducing oxygen into the tuyere and fuel (gas). In addition, in the tail part of the tuyere, at the 15th level of the tubing 9, there is a mixing ring 10, which overlaps the annular gap formed by the central (axial) pipe 11 and the separation pipe 12. The mixing ring 10 is sealed 20 (for example, by welding), welded or with one of these pipes or with both. In the first case, the circumferential docking with the pipe has a seal 13. The mixing ring 10 contains a series of vertical holes — mixing nozzles 14, through which from the upper part 15 of the annular gap, blocked by ring 10, oxygen passes into the fuel-oxygen path 16. The mixing nozzles 14 in the lower part are articulated with openings 17, which serve to supply gaseous |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU472980A1 true SU472980A1 (en) | 1975-06-05 |
Family
ID=20562743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1953200A SU472980A1 (en) | 1973-08-03 | 1973-08-03 | GAS-OXYGEN FURMA3 P T B ^ • ^ - ^: ":" "- - W'SH1 The invention relates to the field of metallurgy, in particular, can be used in steelmaking. A known gas-oxygen lance for blowing melts with preliminary mixing of gases ( fuel and oxygen), which consists of coaxially arranged pipes and a head with nozzles with a central supply of cooling water. However, this lance is not equipped with a device that prevents flame from leaking from the nozzles to the mixing unit. Combustion of a mixture of gas and oxygen inside the annular supply path leads to cut In the proposed gas-oxygen tuyere, in order to prevent flame penetration from the purge nozzles into the fuel-oxygen path, the latter in the lower part is divided by an annular water-cooled partition with openings (an annular partition is manufactured metal, for example copper), an annular gas manifold is placed under the partition, which communicates with the purge nozzles. FIG. 1 shows the gas-oxygen |) urma in section; in fig. 2 is the same; the section along A — A in FIG. 1. The described lance consists of three coaxial alipulations of the pipes, through which, like in an ordinary oxygen lance, the head I is fed, and water is drained from it, and purging gas is fed into it. The lance has a central-axial supply of water 2 to the head I 5 for cooling, channels 3 for draining water from the cetiral cavity of the head into the inter-pipe cavity 4 of the lance. Channels 3 are evenly distributed between the nozzles 5. In the tail part of the tuyere, as in the known tuyeres, there are 10 nozzles b and 7, respectively, for iodachi in the tuyere and removal of water for cooling from it, as well as the nozzles 8 and 9, respectively, for introducing oxygen into the tuyere and fuel (gas). In addition, in the tail part of the tuyere, at the 15th level of the tubing 9, there is a mixing ring 10, which overlaps the annular gap formed by the central (axial) pipe 11 and the separation pipe 12. The mixing ring 10 is sealed 20 (for example, by welding), welded or with one of these pipes or with both. In the first case, the circumferential docking with the pipe has a seal 13. The mixing ring 10 contains a series of vertical holes — mixing nozzles 14, through which from the upper part 15 of the annular gap, blocked by ring 10, oxygen passes into the fuel-oxygen path 16. The mixing nozzles 14 in the lower part are articulated with openings 17, which serve to supply gaseous |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU472980A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4702462A (en) * | 1985-03-19 | 1987-10-27 | Klockner Cra Technologie Gmbh | Water-cooled lance for blowing oxidizing gas onto a metal melt |
-
1973
- 1973-08-03 SU SU1953200A patent/SU472980A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4702462A (en) * | 1985-03-19 | 1987-10-27 | Klockner Cra Technologie Gmbh | Water-cooled lance for blowing oxidizing gas onto a metal melt |
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| SU472980A1 (en) | GAS-OXYGEN FURMA3 P T B ^ • ^ - ^: ":" "- - W'SH1 The invention relates to the field of metallurgy, in particular, can be used in steelmaking. A known gas-oxygen lance for blowing melts with preliminary mixing of gases ( fuel and oxygen), which consists of coaxially arranged pipes and a head with nozzles with a central supply of cooling water. However, this lance is not equipped with a device that prevents flame from leaking from the nozzles to the mixing unit. Combustion of a mixture of gas and oxygen inside the annular supply path leads to cut In the proposed gas-oxygen tuyere, in order to prevent flame penetration from the purge nozzles into the fuel-oxygen path, the latter in the lower part is divided by an annular water-cooled partition with openings (an annular partition is manufactured metal, for example copper), an annular gas manifold is placed under the partition, which communicates with the purge nozzles. FIG. 1 shows the gas-oxygen |) urma in section; in fig. 2 is the same; the section along A — A in FIG. 1. The described lance consists of three coaxial alipulations of the pipes, through which, like in an ordinary oxygen lance, the head I is fed, and water is drained from it, and purging gas is fed into it. The lance has a central-axial supply of water 2 to the head I 5 for cooling, channels 3 for draining water from the cetiral cavity of the head into the inter-pipe cavity 4 of the lance. Channels 3 are evenly distributed between the nozzles 5. In the tail part of the tuyere, as in the known tuyeres, there are 10 nozzles b and 7, respectively, for iodachi in the tuyere and removal of water for cooling from it, as well as the nozzles 8 and 9, respectively, for introducing oxygen into the tuyere and fuel (gas). In addition, in the tail part of the tuyere, at the 15th level of the tubing 9, there is a mixing ring 10, which overlaps the annular gap formed by the central (axial) pipe 11 and the separation pipe 12. The mixing ring 10 is sealed 20 (for example, by welding), welded or with one of these pipes or with both. In the first case, the circumferential docking with the pipe has a seal 13. The mixing ring 10 contains a series of vertical holes — mixing nozzles 14, through which from the upper part 15 of the annular gap, blocked by ring 10, oxygen passes into the fuel-oxygen path 16. The mixing nozzles 14 in the lower part are articulated with openings 17, which serve to supply gaseous | |
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