CN203700419U - Integrated standby baking device for vacuum tank dip pipes - Google Patents
Integrated standby baking device for vacuum tank dip pipes Download PDFInfo
- Publication number
- CN203700419U CN203700419U CN201320634058.2U CN201320634058U CN203700419U CN 203700419 U CN203700419 U CN 203700419U CN 201320634058 U CN201320634058 U CN 201320634058U CN 203700419 U CN203700419 U CN 203700419U
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- vacuum tank
- baking
- burner
- baking box
- dolly
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model provides an integrated standby baking device for vacuum tank dip pipes. A vacuum tank is separated into an upper vacuum tank and a lower vacuum tank; two dip pipes are arranged, and extend out from the lower vacuum tank. The integrated standby baking device for the vacuum tank dip pipe comprises a baking chamber, a smoke vent, a mobile trolley, an air cylinder, a rail, a burner, an ignition and flameout device, a nitrogen pipe, a natural gas pipe, an oxygen pipe and a thermocouple, wherein the smoke vent extends out from one side of the baking chamber; the baking chamber is arranged on the mobile trolley; the mobile trolley can be movably arranged on the rail; the air cylinder is connected with the mobile trolley; the burner is arranged in the baking chamber around the dip pipes; the ignition and flameout device is arranged outside the tank body opposite to the burner; the nitrogen pipe is connected with the ignition and flameout device; the natural gas pipe and the oxygen pipe are connected with the burner; the thermocouple is arranged on the baking chamber. The integrated standby baking device can be used for baking and preheating the vacuum tank dip pipes to prevent the dip pipes from falling due to abrasion and heat in the steel making process.
Description
Technical field
The utility model relates to a kind of apparatus for baking, relates to specifically a kind of apparatus for baking of making steel ladle refining furnace vacuum tank dipping pipe.
Background technology
Ladle refining furnace smelting molten steel uses vacuum tank device.As shown in Figure 1, vacuum tank can be divided into from bottom to top: soaking tub 15a, 15b, bottom vacuum tank 14, top vacuum tank 13.Vacuum tank device uses preheating lance 12 to toast vacuum tank 13,14 inside at standby position, is baked to the required temperature of technique.When smelting molten steel, two soaking tub 15a, 15b of the vacuum tank first baking being put in place are immersed in the ladle (not shown) that contains molten steel, make ladle and vacuum tank form closed system.Then, vacuum system starts, make vacuum tank 13,14 form vacuum chamber, from a side soaking tub, for example soaking tub 15a is blown into gas, and from then on molten steel is blown in vacuum tank 14,13 and splashes in side soaking tub 15a, after molten steel is degassed in vacuum chamber, because molten steel deadweight flow back in ladle from the soaking tub 15b of opposite side, molten steel constantly enters the degassed processing of vacuum chamber from ladle like this, then turns back in ladle from vacuum chamber again, form continuously circulation, until smelting molten steel processing finishes.Conventionally in steelmaking process, soaking tub 15a, 15b directly contact with molten steel with lower channel 14.
In ladle refining furnace vacuum metling process, liquid steel temperature declines with treating processes, and molten steel medial temperature drops to 1575 DEG C of left and right from 1605 DEG C, and its molten steel circulation speed exceedes 100t/min.Double-tube cyclic vacuum stripping (RH) device is to work under high temperature and vacuum condition.The lining body of soaking tub, inwall are subject to the souring of high velocity air and molten steel, and outer wall is corroded by slag, easily produces thermal spalling.Top rifle oxygen blast in smelting, makes upper and lower vacuum tank 13,14 inwalls washed away by high-temperature molten steel and circulation.Whole vacuum tank starts to contact all the time molten steel in smelting process at molten steel, and the resistance to material of vacuum tank affects the smelting of high variety steel after occurring extremely, and when serious, vacuum tank cannot use, thereby the vacuum tank that need more renew.
In STEELMAKING PRODUCTION vacuum tank dipping pipe should have good volume stability, enough hot strength, can high temperature resistant molten steel high speed wash away, and vacuum tank storing temperature arrives corresponding requirement before smelting.The soaking tub good stability of resistance to material under vacuum metling condition, makes the abundant vacuum outgas of molten steel and purifying treatment, greatly improves the purity of molten steel, thereby produces high-quality product.Quality and the vacuum tank dipping pipe of smelting molten steel have substantial connection, after therefore vacuum tank dipping pipe damages, just cannot meet the requirement of vacuum tank smelting technology.
Vacuum tank uses preheating lance 12 to toast at standby position before use, makes vacuum tank 13,14 inside be preheating to the temperature needing, and soaking tub 15a, 15b outside, due to outside, cannot make its preheating.When steel-making, vacuum tank dipping pipe is inside and outside to be immersed in high-temperature molten steel simultaneously, directly contact molten steel, soaking tub refractory materials is due to thermal shocking, in distinct portions (inner and surface) the inconsistent situation of dilation, the inner stress that produces of refractory materials, thus stress and cause be broken to thermal spalling.Thermal conductivity, thermal expansion and the spring rate thereof of heating or cooling speed, resistance to material determine thermal spalling situation.Soaking tub refractory materials is in use because interior change causes be full of cracks, and refractory materials easily causes and peels off.The situation of peeling off through repeatedly contact smelting with molten steel after is more serious, finally cause soaking tub to use, thereby roll off the production line in advance, the preheated vacuum tank that must more renew is made steel, and new vacuum tank soaking tub refractory materials in the time of steel-making equally easily peels off damage.
Therefore studying vacuum tank dipping pipe standby entirety apparatus for baking is an important ring of vacuum tank normal operation, how to ensure the reliability of vacuum tank dipping pipe, becomes a gordian technique.
In No. CN200610027201.6th, Chinese invention patent, disclose a kind of molten steel refining vacuum channel standby preheating device and method, but do not relate to the technical scheme of vacuum tank dipping pipe standby entirety baking.
Summary of the invention
The purpose of this utility model is to provide a kind of vacuum tank dipping pipe standby entirety apparatus for baking, vacuum tank dipping pipe baking preheating can be provided, make that vacuum tank dipping pipe is inside and outside is baked to certain temperature, to prevent soaking tub resistance to material wearing and tearing heat in steelmaking process come off and cause vacuum tank cannot normally use steel-making.
Vacuum tank dipping pipe standby entirety apparatus for baking of the present utility model, described vacuum tank is divided into top vacuum tank and bottom vacuum tank, and the quantity of described soaking tub is 2, stretches out from bottom vacuum tank, and described vacuum tank dipping pipe standby entirety apparatus for baking comprises:
Baking box, smoke exhaust pipe, travelling car, cylinder, track, burner, igniting, extinguishing device, nitrogen tube, natural gas tube, oxygen hose, thermopair; Described smoke exhaust pipe extends from a side of baking box, on described baking box is arranged on travelling car, travelling car is arranged on described track movably, described cylinder is connected with described travelling car, described burner is arranged in baking box around described soaking tub, and described igniting blanker is arranged on outside the casing side relative with described burner, and described nitrogen tube is connected with described igniting blanker, described natural gas tube is connected with burner with oxygen hose, and described the installation of TC is on baking box.
Described baking box comprises two separable casings, described travelling car comprises 2 discerptible the first dollies that relatively move and the second dolly, described cylinder comprises 2 cylinders, connects respectively the first dolly and the second dolly, and described two casings are arranged on respectively on the first dolly and the second dolly.
The quantity of burner is four.
Igniting blanker connects electrical control gear.
The beneficial effects of the utility model are: vacuum tank dipping pipe baking preheating can be provided, make that vacuum tank dipping pipe is inside and outside is baked to certain temperature, extend vacuum tank dipping pipe work-ing life, ensure soaking tub entirety storing temperature, prevent the situations such as soaking tub resistance to material wearing and tearing heat in steelmaking process comes off and cause vacuum tank cannot normally use steel-making, thereby providing useful help for vacuum tank refines high quality fine work steel.
Brief description of the drawings
Fig. 1 is that ladle refining furnace smelting molten steel uses vacuum tank device schematic diagram;
Fig. 2 is the vacuum tank dipping pipe standby entirety apparatus for baking schematic diagram of an embodiment of the utility model.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.First it should be noted that, the utility model is not limited to following embodiment, the spirit that those skilled in the art should embody from following embodiment is understood the utility model, and each technical term can be done the most wide in range understanding based on spirit of the present utility model.In figure, same or analogous member uses the same reference numerals to represent.
As shown in Figure 2, the vacuum tank dipping pipe standby entirety apparatus for baking of an embodiment of the utility model, comprising: baking box 1, smoke exhaust pipe 2, travelling car 3a, 3b, cylinder 4a, 4b, track 5, burner 6, igniting, extinguishing device 7, nitrogen tube 8, natural gas tube 9, oxygen hose 10, thermopair 11.
Smoke exhaust pipe 2 extends from a side of baking box 1, baking box 1 is arranged on travelling car, in the present embodiment, baking box 1 comprises two separable casing 1a, 1b, travelling car comprises 2 discerptible the first dolly 3a that relatively move and the second dolly 3b, two casing 1a, 1b are arranged on respectively on the first dolly 3a and the second dolly 3b, travelling car 3a, 3b are arranged on track 5 movably, cylinder 4 is connected with travelling car, in the present embodiment, cylinder comprises cylinder 4a, 4b, connects respectively the first dolly 3a and the second dolly 3b.3 burners 6 are arranged in baking box 1 around soaking tub 15, in the present embodiment, the quantity of burner 6 is four, igniting blanker 7 is arranged on outside the casing side relative with burner 6, nitrogen tube 8 is connected with igniting blanker 7, natural gas tube 9 is connected with burner 6 with oxygen hose 10, and thermopair 11 is arranged on baking box 1.Thermal ignition blanker 7 connects electrical control gear (not shown).
Below illustrate effect and the further feature of each part mentioned above.
Smoke exhaust pipe 2 is got rid of the flue gas in baking box 1 in bake process, and smoke evacuation makes baking normal.
Two baking casing 1a, 1b are installed in two travelling car 3a, 3b tops, after moving, are spliced into a complete baking box.Because vacuum tank 13,14 is baked at standby position after the temperature needing, vacuum tank 13,14 need laterally move to working position, Mobile vacuum groove after needing two travelling cars to separate, under the state separating, vacuum tank 13,14 uses preheating lance 12 smelting cold steel automatically, cold steel drops down onto the slag basin of travelling car below from soaking tub 15a, 15b, does not affect travelling car and baking box.
Two cylinder 4a, 4b promote travelling car 3a, 3b, by telescopic cylinder, make travelling car casing 1a, 1b be spliced into a baking box 1, cylinders retract separate mobile dolly, mobile vacuum groove 13,14 or smelting cold steel operation.
On track 5, have travelling car 3a, 3b, travelling car moves in track 5 by cylinder 4a, 4b action, can not cause movement deviation, makes the baking box 1 of splicing complete.
Burner 6, in baking box 1, is provided with four burners (shown in figure 1) in two soaking tub 15a, 15b outside, two soaking tub 15a, 15b outside can be toasted, and soaking tub baking evenly like this.
Igniting, extinguishing device 7 can be opened or extinguish combustion device 6 automatically, effectively automatically the switching of control combustion device 6.
Nitrogen tube 8 provides nitrogen, plays automatic distinguishing burner 6.
Oxygen hose 10 and natural gas tube 9 enter into burner 6, gaseous combustion, baking vacuum tank dipping pipe 15a, 15b.
Thermopair 11 detects the temperature of baking box 1, monitors in real time the temperature of baking box 1.
Electrical control, make oxygen, natural gas via igniting afterburner 6 start to toast soaking tub 15a, 15b, large flow baking, the real-time detected temperatures of thermopair 11, electric thermo-couple temperature arrives after the temperature requiring, and thermopair sends signal, and oxygen and gas discharge are reduced, low discharge baking, temperature to the steel-making of keeping soaking tub 15a, 15b is used.
The operation use procedure of vacuum tank dipping pipe standby entirety apparatus for baking of the present utility model is as follows.
Make vacuum tank 13,14 to standby position, top is used preheating lance 12 to toast vacuum tank inside.Soaking tub 15a, 15b toast by the baking box 1 of travelling car 3a, 3b splicing, after automatic ignition, oxygen and Sweet natural gas are sent to burner 6 by oxygen hose and natural gas tube and carry out large flow burning, the outside of quick baking soaking tub 15a, 15b, thermopair 11 detects and arrives after specified temperature, the flow of burner 6 reduces, and baking box 1 is incubated.Inside and outside baking to vacuum tank dipping pipe 15a, 15b before use, can make the temperature of soaking tub 15a, 15b and the liquid steel temperature temperature difference reduce, and meets normal processing requirement, prevents the resistance to material thermal spalling of soaking tub, improves the work-ing life of vacuum tank.
In sum, above-mentioned vacuum tank dipping pipe standby entirety apparatus for baking can provide vacuum tank dipping pipe baking preheating, make that vacuum tank dipping pipe is inside and outside is baked to certain temperature, the situations such as prevention soaking tub resistance to material wearing and tearing heat in steelmaking process comes off, cause vacuum tank cannot normally use steel-making, for vacuum tank refining high quality fine work steel provides useful help.In a word, the utility model can be applicable to the baking of iron and steel metallurgy enterprise steel-making ladle refining furnace vacuum tank dipping pipe, can be at standby position entirety baking soaking tub, extend vacuum tank dipping pipe work-ing life, and ensure soaking tub entirety storing temperature.
Should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned teachings of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (4)
1. a vacuum tank dipping pipe standby entirety apparatus for baking, described vacuum tank is divided into top vacuum tank (13) and bottom vacuum tank (14), and the quantity of described soaking tub is 2, stretches out from bottom vacuum tank (14), it is characterized in that, described vacuum tank dipping pipe standby entirety apparatus for baking comprises:
Baking box (1), smoke exhaust pipe (2), travelling car (3a, 3b), cylinder (4a, 4b), track (5), burner (6), igniting, extinguishing device (7), nitrogen tube (8), natural gas tube (9), oxygen hose (10), thermopair (11), described smoke exhaust pipe (2) extends from a side of described baking box (1), described baking box (1) is arranged on (3a on travelling car, 3b), described travelling car (3a, 3b) be arranged on movably on described track (5), described cylinder (4) and described travelling car (3a, 3b) connect, described burner (6) is around soaking tub (15a, 15b) be arranged in baking box (1), described igniting blanker (7) is arranged on outside the casing side relative with described burner (6), described nitrogen tube (8) is connected with described igniting blanker (7), described natural gas tube (9) is connected with burner (6) with oxygen hose (10), described thermopair (11) is arranged on baking box (1).
2. vacuum tank dipping pipe standby entirety apparatus for baking according to claim 1, it is characterized in that, described baking box (1) comprises two separable casings (1a, 1b), described travelling car comprises 2 discerptible the first dollies (3a) that relatively move and the second dolly (3b), the quantity of described cylinder is 2, connect respectively the first dolly (3a) and the second dolly (3b), described two casings (1a, 1b) are arranged on respectively on the first dolly (3a) and the second dolly (3b).
3. vacuum tank dipping pipe standby entirety apparatus for baking according to claim 1 and 2, is characterized in that, the quantity of burner 6 is four.
4. according to the vacuum tank dipping pipe standby entirety apparatus for baking described in any one of claim 1 to 2, it is characterized in that, igniting blanker (7) connects electrical control gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634058.2U CN203700419U (en) | 2013-10-14 | 2013-10-14 | Integrated standby baking device for vacuum tank dip pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634058.2U CN203700419U (en) | 2013-10-14 | 2013-10-14 | Integrated standby baking device for vacuum tank dip pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203700419U true CN203700419U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320634058.2U Expired - Fee Related CN203700419U (en) | 2013-10-14 | 2013-10-14 | Integrated standby baking device for vacuum tank dip pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203700419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060290A (en) * | 2018-01-31 | 2018-05-22 | 唐山国丰钢铁有限公司 | Gas toast device and its baking method below RH stoves vacuum chamber |
-
2013
- 2013-10-14 CN CN201320634058.2U patent/CN203700419U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060290A (en) * | 2018-01-31 | 2018-05-22 | 唐山国丰钢铁有限公司 | Gas toast device and its baking method below RH stoves vacuum chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20161014 |
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| CF01 | Termination of patent right due to non-payment of annual fee |