CN202936442U - Purge system applicable to MFB top lance - Google Patents
Purge system applicable to MFB top lance Download PDFInfo
- Publication number
- CN202936442U CN202936442U CN 201220682524 CN201220682524U CN202936442U CN 202936442 U CN202936442 U CN 202936442U CN 201220682524 CN201220682524 CN 201220682524 CN 201220682524 U CN201220682524 U CN 201220682524U CN 202936442 U CN202936442 U CN 202936442U
- Authority
- CN
- China
- Prior art keywords
- mfb
- valve
- pipeline
- applicable
- top rifle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The utility model relates to the technical field of purge systems and discloses a purge system applicable to an MFB top lance. The purge system comprises an inert gas source, a pipeline and valves, wherein the inert gas source and the MFB top lance are connected by the pipeline, and the valves are arranged on the pipeline. According to the purge system applicable to the MFB top lance, disclosed by the utility model, an argon gas source is additionally arranged, and the secondary pollution to molten steel caused when the molten steel is subjected to oxygen-blowing decarburization is avoided due to the characteristic that argon gas is inert gas, so that the problem of nitrogen increase for the molten steel is solved. The purge system has the advantages of reasonable structure, remarkable effect and strong practicability.
Description
Technical field
The utility model relates to the purging system technical field, mainly is applicable to the purging system of MFB top rifle.
Background technology
MFB top rifle is the multiduty multifunctional top-guns such as poly-oxygen decarburization, baking, stream slag, intensification on RH vacuum-treat stove, but finds that in use the part molten steel has the nitrogen pick-up problem.When MFB top rifle during at oxygen decarburization, the rifle position is controlled in the 13.500mm left and right, and this moment, burner (rifle head) distance steel liquid level was between 2.5-3m., can produce and splash when the oxygen decarburization due to molten steel, very easily the gas flue with burner stops up, and causes MFB top rifle cisco unity malfunction.Therefore, to protect gas flue under this operating mode, in case major structure becomes passage to stop up.During at oxygen decarburization, pneumatic cut-off valve is opened automatically, carries out the nitrogen flushing protection when MFB top rifle.Owing to making molten steel suffer secondary pollution in the molten steel surface nitrogen flushing, nitrogen in steel content will increase the 3-5ppm left and right, this is less on general steel grade impact, but for just very large on the more sensitive steel grade impact of nitrogen, very tight to Control of Nitrogen Content such as auto sheet, high grade non-oriented silicon steel, general control is below 30ppm.
The utility model content
Technical problem to be solved in the utility model is to provide the purging system of a kind of MFB of being applicable to top rifle, and it has been avoided when molten steel is carried out oxygen decarburization, molten steel is produced secondary pollution, thereby solved the problem of molten steel nitrogen pick-up.
For solving the problems of the technologies described above, the utility model provides the purging system of a kind of MFB of being applicable to top rifle to comprise: inert gas source, pipeline and valve; Described pipeline connects described inert gas source and MFB top rifle, and described valve is arranged on pipeline.
Further, also comprise: metering outfit; Described metering outfit also is arranged on described pipeline.
Further, described valve comprises: variable valve; Described variable valve is arranged on described pipeline.
Further, described valve comprises: the first pneumatic cut-off valve; Described the first pneumatic cut-off valve is arranged on described pipeline, and is connected with Controlling System.
Further, described metering outfit comprises: tensimeter; Described tensimeter is arranged on described pipeline.
Further, described metering outfit comprises: under meter; Described under meter is arranged on described pipeline, and is connected with Controlling System.
Further, described variable valve is direct-operated regulator.
Further, described inert gas source is argon gas source.
The beneficial effects of the utility model are:
The utility model provides is applicable to the purging system of MFB top rifle by having increased by one road argon gas source of the gas, utilizing argon gas is the characteristic of rare gas element, avoided when molten steel is carried out oxygen decarburization, molten steel has been produced secondary pollution, thereby solved the problem of molten steel nitrogen pick-up.The utility model is rational in infrastructure, effect is remarkable, practical.
Description of drawings
The structural representation of the purging system that is applicable to MFB top rifle that Fig. 1 provides for the utility model embodiment.
Wherein, 1-direct-operated regulator, 2-tensimeter, 3-under meter, 4-the first pneumatic cut-off valve, 5-the second pneumatic cut-off valve, 6-MFB top rifle.
Embodiment
Be to reach technique means and the effect that predetermined utility model purpose is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, embodiment and principle of work according to the purging system that is applicable to MFB top rifle that the utility model proposes are elaborated.
As shown in Figure 1, the purging system that the utility model provides is applicable to MFB top rifle comprises: inert gas source, pipeline, metering outfit and valve; Pipeline connects inert gas source and MFB top rifle 6, and valve and metering outfit all are arranged on pipeline.Concrete, valve comprises: variable valve and the first pneumatic cut-off valve 4; Variable valve and the first pneumatic cut-off valve 4 all are arranged on pipeline, and the first pneumatic cut-off valve 4 also is connected with Controlling System.Metering outfit comprises: tensimeter 2 and under meter 3; Tensimeter 2 and under meter 3 all are arranged on pipeline, and under meter 3 also is connected with Controlling System.
Preferably, in the present embodiment, variable valve is direct-operated regulator 1, and inert gas source is argon gas source, and pressure is 1.4-2.94MPa.Argon gas source, direct-operated regulator 1, tensimeter 2, under meter 3, the first pneumatic cut-off valve 4 and MFB top rifle 6 are linked in sequence.
The purging system that the utility model provides is applicable to MFB top rifle first sends OPENs by Controlling System to the first pneumatic cut-off valve 4 by the staff when work, open after the first pneumatic cut-off valve 4 receives OPEN.This moment, argon gas entered pipeline, and when argon gas passed through direct-operated regulator 1, its pressure was lowered to 0.8MPa; Entered MFB top rifle 6 through tensimeter 2, under meter 3 and the first pneumatic cut-off valve 4 successively again by the argon gas of step-down.MFB top rifle 6 is blown into gas line with argon gas with little tolerance again, makes the gas flue outlet in burner keep pressure-fired, thereby has prevented the burner obstruction.Because argon gas is rare gas element, it not can with molten steel generation chemical reaction, therefore can not produce secondary pollution to molten steel, thereby solve the problem of molten steel nitrogen pick-up in the original system.When purging operation by the utility model, the pressure data of the argon gas that not only can obtain being transfused to by the tensimeter 2 at scene, but also observe data on flows by the argon gas of under meter 3 transmission at scene on can the display screen in Controlling System, thereby make the staff can be clearer grasp purge the process of operation, to improve practicality of the present utility model.After the purging operation is complete, can control the first pneumatic cut-off valve 4 closures by computer program, to realize the cut-out of argon gas.
Here also need to prove, the utility model has kept the nitrogen path that originally exists when increasing by one road argon gas source.When MFB top rifle 6 does not carry out oxygen decarburization, can gas line be purged by the original nitrogen of switching utilization of the second pneumatic cut-off valve 5.
The utility model provides is applicable to the purging system of MFB top rifle by having increased by one road argon gas source of the gas, utilizing argon gas is the characteristic of rare gas element, avoided when molten steel is carried out oxygen decarburization, molten steel has been produced secondary pollution, thereby solved the problem of molten steel nitrogen pick-up.The utility model is rational in infrastructure, effect is remarkable, practical.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to example, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (9)
1. a purging system that is applicable to MFB top rifle, is characterized in that, comprising: inert gas source, pipeline and valve; Described pipeline connects described inert gas source and MFB top rifle, and described valve is arranged on pipeline.
2. the purging system that is applicable to MFB top rifle as claimed in claim 1, is characterized in that, also comprises: metering outfit; Described metering outfit also is arranged on described pipeline.
3. the purging system that is applicable to MFB top rifle as claimed in claim 1 or 2, is characterized in that, described valve comprises: variable valve; Described variable valve is arranged on described pipeline.
4. the purging system that is applicable to MFB top rifle as claimed in claim 1 or 2, is characterized in that, described valve comprises: the first pneumatic cut-off valve; Described the first pneumatic cut-off valve is arranged on described pipeline, and is connected with Controlling System.
5. the purging system that is applicable to MFB top rifle as claimed in claim 3, is characterized in that, described valve comprises: the first pneumatic cut-off valve; Described the first pneumatic cut-off valve is arranged on described pipeline, and is connected with Controlling System.
6. the purging system that is applicable to MFB top rifle as claimed in claim 2, is characterized in that, described metering outfit comprises: tensimeter; Described tensimeter is arranged on described pipeline.
7. the purging system that is applicable to MFB top rifle as claimed in claim 2, is characterized in that, described metering outfit comprises: under meter; Described under meter is arranged on described pipeline, and is connected with Controlling System.
8. the purging system that is applicable to MFB top rifle as claimed in claim 3, is characterized in that, described variable valve is direct-operated regulator.
9. the purging system that is applicable to MFB top rifle as claimed in claim 1, is characterized in that, described inert gas source is argon gas source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220682524 CN202936442U (en) | 2012-12-10 | 2012-12-10 | Purge system applicable to MFB top lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220682524 CN202936442U (en) | 2012-12-10 | 2012-12-10 | Purge system applicable to MFB top lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202936442U true CN202936442U (en) | 2013-05-15 |
Family
ID=48320694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220682524 Expired - Lifetime CN202936442U (en) | 2012-12-10 | 2012-12-10 | Purge system applicable to MFB top lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202936442U (en) |
-
2012
- 2012-12-10 CN CN 201220682524 patent/CN202936442U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204958970U (en) | Refining furnace ladle bottom blowing argon controlling means | |
| CN104073588A (en) | Automatic control method for ladle bottom argon blowing of converter | |
| CN103395745B (en) | Prevent hydrogen chloride gas from crossing the interlocking signal system and method for chlorine | |
| CN202658180U (en) | Refining device for smelting low-nitrogen steel and high-nitrogen steel by Ar/N2 plasma source | |
| CN208055392U (en) | The control system of steel ladle bottom argon blowing | |
| KR101764434B1 (en) | Inert gas supply system for oil tanker | |
| CN102397998A (en) | Method for reducing secondary oxidation of molten steel | |
| CN202936442U (en) | Purge system applicable to MFB top lance | |
| CN103013538B (en) | Method for quickly converting coke oven heating gas | |
| CN204985131U (en) | LF stove electric pole fluctuation hydraulic control system | |
| CN203144438U (en) | Hot-blast furnace pressurizing control device | |
| CN220413447U (en) | RH vacuum treatment circulating gas adjusting and controlling device | |
| CN203586275U (en) | Industrial furnace combustion control system for dual purposes of heavy oil and natural gas | |
| CN203256295U (en) | Self-adapted regulation control system of oxygen blowing pressure of converter | |
| CN109487025B (en) | Furnace top nitrogen system | |
| CN104073624A (en) | Pressure control method for furnace chamber of vertical continuous annealing furnace | |
| CN103576725A (en) | Method for adjusting and stabilizing pressure of calcium carbide furnace gas | |
| CN104774992B (en) | Method for adopting control device for converter steelmaking nitrogen-oxygen combined blowing to realize converter steelmaking nitrogen-oxygen combined blowing | |
| CN205173994U (en) | Conveyor and thermal power system to desulfurization transportation equipment flue gas | |
| CN202158786U (en) | Oxygen blast chronograph | |
| CN103184303A (en) | Self-adaptive regulation control system for oxygen blowing pressure of converter and control method thereof | |
| CN203212590U (en) | Oxygen coal gun cooling medium regulating and controlling system | |
| CN203887355U (en) | Brazing furnace equipment with protective gas switching function | |
| CN103708745B (en) | Connecting adjustment device of double-hearth lime kiln burning calcium carbide furnace tail gas | |
| CN202443295U (en) | Automatic control system universally used by argon oxygen decarburization (AOD) furnace and top and bottom combined blowing furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: WUHAN HANWEI SECONDARY REFINING ENGINEERING Co.,Ltd. Assignor: WUHAN IRON AND STEEL (GROUP) Corp.|WUHAN HANWEI SECONDARY REFINING ENGINEERING Co.,Ltd. Contract record no.: 2014420000066 Denomination of utility model: Purge system applicable to MFB top lance Granted publication date: 20130515 License type: Exclusive License Record date: 20140508 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171225 Address after: No. 12, No. four, metallurgical Avenue, Qingshan District, Wuhan, Hubei Province, attached to four Patentee after: WUHAN HANWEI SECONDARY REFINING ENGINEERING Co.,Ltd. Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Co-patentee before: WUHAN HANWEI SECONDARY REFINING ENGINEERING Co.,Ltd. Patentee before: WUHAN IRON AND STEEL (GROUP) Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |