CN208475954U - A kind of electric arc furnaces - Google Patents
A kind of electric arc furnaces Download PDFInfo
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- CN208475954U CN208475954U CN201821060095.6U CN201821060095U CN208475954U CN 208475954 U CN208475954 U CN 208475954U CN 201821060095 U CN201821060095 U CN 201821060095U CN 208475954 U CN208475954 U CN 208475954U
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- electrode
- secondary enclosure
- electric arc
- arc furnaces
- entrance
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Abstract
The utility model discloses a kind of electric arc furnaces, including secondary enclosure (3), electrode (4), electrode small furnace cover (5), arc furnace cover (8) and burner hearth, secondary enclosure (3) is located at outside the burner hearth, electrode (4), electrode small furnace cover (5) and arc furnace cover (8) are successively arranged from inside to outside, secondary enclosure (3) is cylindrical in shape structure, one end of secondary enclosure (3) is equipped with entrance (31) and electrode installing port (32), the other end of secondary enclosure (3) is equipped with outlet (33), the entrance (31) of secondary enclosure (3) is sheathed on small furnace cover (5) outside, electrode (4) passes through the electrode installing port (32) of secondary enclosure (3).Realize prevents that air is entered in furnace from the electrode hole on furnace lid outside furnace and inner flue gas of the stove is from electrode hole to external diffusion in EAF Steelmaking Process, does not influence being freely lifted for electrode in smelting process while to reach closed electrode hole.
Description
Technical field
The utility model relates to smelting equipment field, a kind of particularly electric arc furnaces.
Background technique
Currently, in EAF Steelmaking Process between furnace lid electrode hole and electrode there are gap, do so main
Be for convenience high temperature electrode in complicated fusing smelting process can fast free lifting, to guarantee the stabilization and height of electric arc
Effect production.But the presence of electrode interporal lacuna, which will lead to the excessive air to outside furnace or outside furnace of the flue gas in furnace, to be entered in furnace.Furnace
The excessive pollution that will lead to furnace heat loss and smelt post environment of interior flue gas.The outer air of furnace enters in furnace, is bringing 21% into
Oxygen while also brought a large amount of nitrogen and other inert gases into, oxygen enters in furnace the oxidation that will increase electrode and disappears
Consumption, other gases in addition to oxygen, which enter, then will increase dust pelletizing system operating load in electric furnace, nitrogen enter in furnace after
It is cracked under high-temperature electric arc, so this smelting process will cause molten steel nitrogen pick-up, reduces Molten Steel Cleanliness.
Utility model content
In order to which the air solved the problems, such as outside furnace can enter in furnace.The utility model provides a kind of electric arc furnaces, the electric arc
Furnace, which is able to solve while fast free during electric furnace high-temperature Electrode is gone up and down, prevents air or furnace gas from freeing in and out electricity
Pole hole.
The utility model solves that technical application used by its technical problem is novel to be: a kind of electric arc furnaces, including secondary row
Petticoat pipe, electrode, electrode small furnace cover, arc furnace cover and burner hearth, secondary enclosure are located at outside the burner hearth, electrode, electrode port
Lid and arc furnace cover are successively arranged from inside to outside, and secondary enclosure is cylindrical in shape structure, and one end of secondary enclosure is equipped with entrance
It is equipped with outlet with the other end of electrode installing port, secondary enclosure, the entrance of secondary enclosure is sheathed on outside electrode small furnace cover, electricity
Pole passes through the electrode installing port of secondary enclosure.
The electric arc furnaces also contains workshop secondary cleaning shaft, and the outlet of secondary enclosure can be with workshop secondary cleaning shaft
Entrance be correspondingly connected with.
The entrance of workshop secondary cleaning shaft is connected with driving mechanism, which can make workshop secondary cleaning shaft
Entrance can be close to or far from the outlet of secondary enclosure.
Measured oxygen concentration instrument is equipped in secondary enclosure, the measured oxygen concentration instrument and driving mechanism interlock.
Secondary enclosure is in a horizontal state, and the outlet of secondary enclosure and the entrance of workshop secondary cleaning shaft are equipped with method
Orchid, driving mechanism are hydraulic cylinder.
Secondary enclosure is connected with fixed frame by movable pipeline section and is formed, and the entrance and electrode installing port of secondary enclosure are equal
Between movable pipeline section and fixed frame, the outlet of secondary enclosure is located at one end of movable pipeline section.
It can be separated between movable pipeline section and fixed frame.
Movable pipeline section and fixed frame are detachably connected with arc furnace cover.
Movable pipeline section and fixed frame are formed by water cooling Coil welding.
The electrode hole for electrode grafting is equipped in electrode small furnace cover, electrode small furnace cover and arc furnace cover seal grafting.
The beneficial effects of the utility model are: the electric arc furnaces can be such that the air entered in furnace is greatly decreased, to reduce
The exhaust gas volumn for entering Eaf'S Dusting System, thereby reduces the load and energy consumption of electric stove dust；Substantially into the air in furnace
It reduces, it is possible to reduce the red-hot electrode of furnace high-temperature is by the dioxygen oxidation in air, to reduce consumption；It is big into the air in furnace
Width is reduced, it is possible to reduce the oxygen that the reducibility gas produced in furnace is brought by air carries out secondary oxidation or burning, to mention
The content of reducing gas in high flue gas is conducive to the further recycling and utilization of the reducibility gas generated in furnace；With significant
Energy conservation and consumption reduction effects.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Fig. 1 is the main view of electric arc furnaces described in the utility model.
Fig. 2 is the enlarged diagram at electrode small furnace cover position.
Fig. 3 is the top view of electric arc furnaces described in the utility model.
Fig. 4 is the top view of secondary enclosure.
Fig. 5 is in Fig. 4 along the cross-sectional view in the direction A-A.
1, driving mechanism；2, workshop secondary cleaning shaft；3, secondary enclosure；4, electrode；5, electrode small furnace cover；6, movable
Pipeline section；7, fixed frame；8, arc furnace cover；
31, entrance；32, electrode installing port；33, it exports.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of electric arc furnaces, the electric arc furnaces include secondary enclosure 3, electrode 4, electrode small furnace cover 5, arc furnace cover 8 and furnace
Thorax, secondary enclosure 3 is located at outside the burner hearth, and secondary enclosure 3 is located at the top of arc furnace cover 8, and electrode 4, electrode are small
Bell 5 and arc furnace cover 8 are successively arranged from inside to outside, and secondary enclosure 3 is cylindrical in shape structure, and one end of secondary enclosure 3 is set
There are entrance 31 and electrode installing port 32, the other end of secondary enclosure 3 is equipped with outlet 33, and the entrance 31 of secondary enclosure 3 is arranged
In outside electrode small furnace cover 5, electrode 4 passes through the electrode installing port 32 of secondary enclosure 3, as shown in Figure 1 to Figure 3.
By the way that secondary enclosure is arranged in the top of arc furnace cover 8, realization prevents furnace outer space in EAF Steelmaking Process
Gas is entered in furnace from the electrode hole on furnace lid and inner flue gas of the stove is from electrode hole to external diffusion, to reach closed electrode hole
Being freely lifted for electrode in smelting process is not influenced simultaneously.The utility model is primarily adapted for use in the electric furnace electrode of normal atmospheric pressure
Hole sealing.
In the present embodiment, which also contains workshop secondary cleaning shaft 2, and the outlet 33 of secondary enclosure 3 can
It is correspondingly connected with the entrance of workshop secondary cleaning shaft 2.The entrance of workshop secondary cleaning shaft 2 is connected with driving mechanism 1, the drive
Motivation structure 1 can enable the entrance of workshop secondary cleaning shaft 2 close to or far from the outlet 33 of secondary enclosure 3.
When outside furnace air by secondary 3 top of enclosure electrode installing port 32 enter secondary enclosure 3 inner cavity after meeting
Workshop secondary dust pelletizing system is evacuated to by workshop secondary cleaning shaft 2 and carries out gas cleaning and processing.When the flue gas in furnace is by electrode
After the inner cavity of excessive to the secondary enclosure 3 of the electrode hole of small furnace cover 5, equally workshop can be evacuated to by workshop secondary cleaning shaft 2
The spacing of secondary dedusting system progress gas cleaning and processing, secondary enclosure 3 and workshop secondary cleaning shaft 2 can be by driving
Mechanism 1 is adjusted；Driving mechanism 1 can be hydraulic cylinder.
In the present embodiment, in secondary enclosure 3 can be equipped with measured oxygen concentration instrument, the measured oxygen concentration instrument with
Driving mechanism 1 interlocks.It can be gone to the workshop final dusting pipeline 2 according to the oxygen concentration in flue gas in the driving of driving mechanism 1
Entrance is mobile close to or far from secondary enclosure 3, such as when detecting the oxygen concentration in flue gas lower than setting value, workshop secondary
The entrance of cleaning shaft 2 can be moved far from secondary enclosure 3, and the on the contrary then entrance of workshop secondary cleaning shaft 2 is close to two
Secondary enclosure 3 is mobile, and what can be quantified in this way ensures practical sealing effect.
In the present embodiment, secondary enclosure 3 is in a horizontal state, the outlet 33 and workshop secondary dedusting of secondary enclosure 3
The entrance of pipeline 2 is equipped with flange arrangement, in order to connect.The entrance 31 of secondary enclosure 3 is located at the right end of secondary enclosure 3
Lower part, the electrode installing port 32 of secondary enclosure 3 is located at the top of the right end of secondary enclosure 3, the outlet of secondary enclosure 3
33 are located at the left end of secondary enclosure 3, as shown in Figure 1.
In the present embodiment, which be different from for an enclosure in the 4th hole of arc furnace cover 8
, secondary enclosure 3 is split type structure, and secondary enclosure 3 is formed by movable pipeline section 6 and the connection of fixed frame 7, secondary smoke evacuation
The entrance 31 and electrode installing port 32 of cover 3 are respectively positioned between movable pipeline section 6 and fixed frame 7, and movable pipeline section 6 is tubular structure,
Movable pipeline section 6 is in a horizontal state, and the outlet 33 of secondary enclosure 3 is located at one end of movable pipeline section 6, as shown in Figure 4 and Figure 5.
In the present embodiment, it can be separated between movable pipeline section 6 and fixed frame 7.Movable pipeline section 6 and fixed frame 7 are equal
It is detachably connected with arc furnace cover 8.Movable pipeline section 6 and fixed frame 7 are formed by water cooling Coil welding, in order to facilitate understanding
Do not have actual to draw the water cooling coil pipe in Fig. 4 and Fig. 5, it is understood that indicate water cooling for the hatching in solution Fig. 4 and Fig. 5
Coil pipe.Movable pipeline section 6, which can be removed, to be hung away by crane in order to the replacement of electrode small furnace cover 5.Arc furnace cover 8 is
Water cooled cover is connected by screw bolts between fixed frame 7 and arc furnace cover 8, easy to disassemble and maintenance.
In the present embodiment, three electrode holes for the corresponding grafting of three electrodes 4, electrode are equipped in electrode small furnace cover 5
The size in hole as far as possible small on the basis of meeting rise fall of electrodes, to reduce the diffusing capacity of inner flue gas of the stove, electrode small furnace cover 5 and electricity
Arc furnace bell 8 seals grafting.To water when electrode small furnace cover 5 can reduce electrode arc striking while preventing inner flue gas of the stove excessive
The damage of black furnace lid.
The above, only specific embodiment of the utility model cannot limit the range that utility model is implemented, institute with it
With the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection scope and modification, should all still fall within
The scope that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical application
Between novel, technical application it is novel it is novel with technical application between use can be freely combined.
Claims (10)
1. a kind of electric arc furnaces, which is characterized in that the electric arc furnaces include secondary enclosure (3), electrode (4), electrode small furnace cover (5),
Arc furnace cover (8) and burner hearth, secondary enclosure (3) are located at outside the burner hearth, electrode (4), electrode small furnace cover (5) and electric arc furnaces
Bell (8) is successively arranged from inside to outside, and secondary enclosure (3) is cylindrical in shape structure, and one end of secondary enclosure (3) is equipped with entrance
(31) and electrode installing port (32), the other end of secondary enclosure (3) are equipped with outlet (33), the entrance of secondary enclosure (3)
(31) it is sheathed on electrode small furnace cover (5) outside, electrode (4) passes through the electrode installing port (32) of secondary enclosure (3).
2. electric arc furnaces according to claim 1, which is characterized in that the electric arc furnaces also contains workshop secondary cleaning shaft (2),
The outlet (33) of secondary enclosure (3) can be correspondingly connected with the entrance of workshop secondary cleaning shaft (2).
3. electric arc furnaces according to claim 2, which is characterized in that the entrance of workshop secondary cleaning shaft (2) is connected with drive
Motivation structure (1), the driving mechanism (1) can enable the entrance of workshop secondary cleaning shaft (2) close to or far from secondary smoke evacuation
Cover the outlet (33) of (3).
4. electric arc furnaces according to claim 3, which is characterized in that measured oxygen concentration instrument is equipped in secondary enclosure (3),
The measured oxygen concentration instrument and driving mechanism (1) interlock.
5. electric arc furnaces according to claim 2, which is characterized in that secondary enclosure (3) is in a horizontal state, secondary enclosure
(3) entrance of outlet (33) and workshop secondary cleaning shaft (2) is equipped with flange, and driving mechanism (1) is hydraulic cylinder.
6. electric arc furnaces according to claim 1, which is characterized in that secondary enclosure (3) is by movable pipeline section (6) and fixed frame
Frame (7) connection is formed, and the entrance (31) and electrode installing port (32) of secondary enclosure (3) are respectively positioned on movable pipeline section (6) and fix
Between frame (7), the outlet (33) of secondary enclosure (3) is located at one end of movable pipeline section (6).
7. electric arc furnaces according to claim 6, which is characterized in that can divide between movable pipeline section (6) and fixed frame (7)
From.
8. electric arc furnaces according to claim 6, which is characterized in that movable pipeline section (6) and fixed frame (7) are and electric arc furnaces
Bell (8) is detachably connected.
9. electric arc furnaces according to claim 6, which is characterized in that movable pipeline section (6) and fixed frame (7) are by aqueous cold plate
Pipe welds to be formed.
10. electric arc furnaces according to claim 1, which is characterized in that be equipped in electrode small furnace cover (5) and inserted for electrode (4)
The electrode hole connect, electrode small furnace cover (5) and arc furnace cover (8) seal grafting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821060095.6U CN208475954U (en) | 2018-07-05 | 2018-07-05 | A kind of electric arc furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821060095.6U CN208475954U (en) | 2018-07-05 | 2018-07-05 | A kind of electric arc furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208475954U true CN208475954U (en) | 2019-02-05 |
Family
ID=65213198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821060095.6U Active CN208475954U (en) | 2018-07-05 | 2018-07-05 | A kind of electric arc furnaces |
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| CN (1) | CN208475954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680004A (en) * | 2018-07-05 | 2018-10-19 | 中冶京诚工程技术有限公司 | A kind of electric arc furnaces |
-
2018
- 2018-07-05 CN CN201821060095.6U patent/CN208475954U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680004A (en) * | 2018-07-05 | 2018-10-19 | 中冶京诚工程技术有限公司 | A kind of electric arc furnaces |
| CN108680004B (en) * | 2018-07-05 | 2023-12-08 | 中冶京诚工程技术有限公司 | Electric arc furnace |
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